Finding the Fourth Proportional to 102,479.76, 141,461.10 and 77,059.98

Step by Step Solution

1. Step 1: Write the proportion equation
   102,479.76 : 141,461.10 = 77,059.98 : x
2. Step 2: Convert to fraction form
   102,479.76/141,461.10 = 77,059.98/x
3. Step 3: Cross multiply
   102,479.76x = 141,461.10 × 77,059.98
4. Step 4: Simplify right side
   102,479.76x = 10,900,989,536.78
5. Step 5: Solve for x
   x = 10,900,989,536.78/102,479.76
6. Step 6: Final answer
   x = 106,372.12