Finding the Fourth Proportional to 88,308.72, 121,892.72 and 60,030.81

Step by Step Solution

1. Step 1: Write the proportion equation
   88,308.72 : 121,892.72 = 60,030.81 : x
2. Step 2: Convert to fraction form
   88,308.72/121,892.72 = 60,030.81/x
3. Step 3: Cross multiply
   88,308.72x = 121,892.72 × 60,030.81
4. Step 4: Simplify right side
   88,308.72x = 7,317,318,414.55
5. Step 5: Solve for x
   x = 7,317,318,414.55/88,308.72
6. Step 6: Final answer
   x = 82,860.66