Finding the Fourth Proportional to 57,055.59, 78,735.24 and 31,561.29

Step by Step Solution

1. Step 1: Write the proportion equation
   57,055.59 : 78,735.24 = 31,561.29 : x
2. Step 2: Convert to fraction form
   57,055.59/78,735.24 = 31,561.29/x
3. Step 3: Cross multiply
   57,055.59x = 78,735.24 × 31,561.29
4. Step 4: Simplify right side
   57,055.59x = 2,484,985,742.86
5. Step 5: Solve for x
   x = 2,484,985,742.86/57,055.59
6. Step 6: Final answer
   x = 43,553.76