Finding the Fourth Proportional to 56,308.50, 77,706.29 and 31,158.54

Step by Step Solution

1. Step 1: Write the proportion equation
   56,308.50 : 77,706.29 = 31,158.54 : x
2. Step 2: Convert to fraction form
   56,308.50/77,706.29 = 31,158.54/x
3. Step 3: Cross multiply
   56,308.50x = 77,706.29 × 31,158.54
4. Step 4: Simplify right side
   56,308.50x = 2,421,214,545.22
5. Step 5: Solve for x
   x = 2,421,214,545.22/56,308.50
6. Step 6: Final answer
   x = 42,999.10