Finding the Fourth Proportional to 93,159.86, 139,564.82 and 72,281.30

Step by Step Solution

1. Step 1: Write the proportion equation
   93,159.86 : 139,564.82 = 72,281.30 : x
2. Step 2: Convert to fraction form
   93,159.86/139,564.82 = 72,281.30/x
3. Step 3: Cross multiply
   93,159.86x = 139,564.82 × 72,281.30
4. Step 4: Simplify right side
   93,159.86x = 10,087,926,106.75
5. Step 5: Solve for x
   x = 10,087,926,106.75/93,159.86
6. Step 6: Final answer
   x = 108,286.19