Finding the Fourth Proportional to 100,624, 138,778.72 and 62,356.96

Step by Step Solution

1. Step 1: Write the proportion equation
   100,624 : 138,778.72 = 62,356.96 : x
2. Step 2: Convert to fraction form
   100,624/138,778.72 = 62,356.96/x
3. Step 3: Cross multiply
   100,624x = 138,778.72 × 62,356.96
4. Step 4: Simplify right side
   100,624x = 8,653,819,091.89
5. Step 5: Solve for x
   x = 8,653,819,091.89/100,624
6. Step 6: Final answer
   x = 86,001.54