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Finding the Fourth Proportional to 80,745.06, 120,929.76 and 77,941.92

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Solution

The fourth proportional to 80,745.06, 120,929.76 and 77,941.92 is: 116,731.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,745.06 : 120,929.76 = 77,941.92 : x
  2. Step 2: Convert to fraction form
    80,745.06/120,929.76 = 77,941.92/x
  3. Step 3: Cross multiply
    80,745.06x = 120,929.76 × 77,941.92
  4. Step 4: Simplify right side
    80,745.06x = 9,425,497,679.54
  5. Step 5: Solve for x
    x = 9,425,497,679.54/80,745.06
  6. Step 6: Final answer
    x = 116,731.57

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