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Finding the Fourth Proportional to 102,878.16, 141,970.82 and 56,937.89

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Solution

The fourth proportional to 102,878.16, 141,970.82 and 56,937.89 is: 78,573.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,878.16 : 141,970.82 = 56,937.89 : x
  2. Step 2: Convert to fraction form
    102,878.16/141,970.82 = 56,937.89/x
  3. Step 3: Cross multiply
    102,878.16x = 141,970.82 × 56,937.89
  4. Step 4: Simplify right side
    102,878.16x = 8,083,519,002.61
  5. Step 5: Solve for x
    x = 8,083,519,002.61/102,878.16
  6. Step 6: Final answer
    x = 78,573.71

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