Finding the Fourth Proportional to 57,055.32, 78,730.29 and 31,557.63

Step by Step Solution

1. Step 1: Write the proportion equation
   57,055.32 : 78,730.29 = 31,557.63 : x
2. Step 2: Convert to fraction form
   57,055.32/78,730.29 = 31,557.63/x
3. Step 3: Cross multiply
   57,055.32x = 78,730.29 × 31,557.63
4. Step 4: Simplify right side
   57,055.32x = 2,484,541,361.61
5. Step 5: Solve for x
   x = 2,484,541,361.61/57,055.32
6. Step 6: Final answer
   x = 43,546.18