Finding the Fourth Proportional to 92,397.30, 138,401.55 and 76,845.30

Step by Step Solution

1. Step 1: Write the proportion equation
   92,397.30 : 138,401.55 = 76,845.30 : x
2. Step 2: Convert to fraction form
   92,397.30/138,401.55 = 76,845.30/x
3. Step 3: Cross multiply
   92,397.30x = 138,401.55 × 76,845.30
4. Step 4: Simplify right side
   92,397.30x = 10,635,508,630.22
5. Step 5: Solve for x
   x = 10,635,508,630.22/92,397.30
6. Step 6: Final answer
   x = 115,106.27