Finding the Fourth Proportional to 139,092.78, 191,915.91 and 93,854.70

Step by Step Solution

1. Step 1: Write the proportion equation
   139,092.78 : 191,915.91 = 93,854.70 : x
2. Step 2: Convert to fraction form
   139,092.78/191,915.91 = 93,854.70/x
3. Step 3: Cross multiply
   139,092.78x = 191,915.91 × 93,854.70
4. Step 4: Simplify right side
   139,092.78x = 18,012,210,158.28
5. Step 5: Solve for x
   x = 18,012,210,158.28/139,092.78
6. Step 6: Final answer
   x = 129,497.81