Finding the Fourth Proportional to 103,173.67, 142,404.96 and 62,909.61

Step by Step Solution

1. Step 1: Write the proportion equation
   103,173.67 : 142,404.96 = 62,909.61 : x
2. Step 2: Convert to fraction form
   103,173.67/142,404.96 = 62,909.61/x
3. Step 3: Cross multiply
   103,173.67x = 142,404.96 × 62,909.61
4. Step 4: Simplify right side
   103,173.67x = 8,958,640,495.67
5. Step 5: Solve for x
   x = 8,958,640,495.67/103,173.67
6. Step 6: Final answer
   x = 86,830.69