Finding the Fourth Proportional to 102,013.82, 140,792.20 and 57,310.46

Step by Step Solution

1. Step 1: Write the proportion equation
   102,013.82 : 140,792.20 = 57,310.46 : x
2. Step 2: Convert to fraction form
   102,013.82/140,792.20 = 57,310.46/x
3. Step 3: Cross multiply
   102,013.82x = 140,792.20 × 57,310.46
4. Step 4: Simplify right side
   102,013.82x = 8,068,864,899.17
5. Step 5: Solve for x
   x = 8,068,864,899.17/102,013.82
6. Step 6: Final answer
   x = 79,095.81