Finding the Fourth Proportional to 56,350.69, 77,766.38 and 31,200.19

Step by Step Solution

1. Step 1: Write the proportion equation
   56,350.69 : 77,766.38 = 31,200.19 : x
2. Step 2: Convert to fraction form
   56,350.69/77,766.38 = 31,200.19/x
3. Step 3: Cross multiply
   56,350.69x = 77,766.38 × 31,200.19
4. Step 4: Simplify right side
   56,350.69x = 2,426,325,598.20
5. Step 5: Solve for x
   x = 2,426,325,598.20/56,350.69
6. Step 6: Final answer
   x = 43,057.60