Finding the Fourth Proportional to 56,554.72, 78,046.22 and 31,057.36

Step by Step Solution

1. Step 1: Write the proportion equation
   56,554.72 : 78,046.22 = 31,057.36 : x
2. Step 2: Convert to fraction form
   56,554.72/78,046.22 = 31,057.36/x
3. Step 3: Cross multiply
   56,554.72x = 78,046.22 × 31,057.36
4. Step 4: Simplify right side
   56,554.72x = 2,423,909,551.18
5. Step 5: Solve for x
   x = 2,423,909,551.18/56,554.72
6. Step 6: Final answer
   x = 42,859.54