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Finding the Fourth Proportional to 99,420.84, 137,196.72 and 56,949.84

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Solution

The fourth proportional to 99,420.84, 137,196.72 and 56,949.84 is: 78,588.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,420.84 : 137,196.72 = 56,949.84 : x
  2. Step 2: Convert to fraction form
    99,420.84/137,196.72 = 56,949.84/x
  3. Step 3: Cross multiply
    99,420.84x = 137,196.72 × 56,949.84
  4. Step 4: Simplify right side
    99,420.84x = 7,813,331,252.52
  5. Step 5: Solve for x
    x = 7,813,331,252.52/99,420.84
  6. Step 6: Final answer
    x = 78,588.47

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