Finding the Fourth Proportional to 92,255.41, 138,275.59 and 42,340.78

Step by Step Solution

1. Step 1: Write the proportion equation
   92,255.41 : 138,275.59 = 42,340.78 : x
2. Step 2: Convert to fraction form
   92,255.41/138,275.59 = 42,340.78/x
3. Step 3: Cross multiply
   92,255.41x = 138,275.59 × 42,340.78
4. Step 4: Simplify right side
   92,255.41x = 5,854,696,335.56
5. Step 5: Solve for x
   x = 5,854,696,335.56/92,255.41
6. Step 6: Final answer
   x = 63,461.82