Finding the Fourth Proportional to 56,562.55, 78,059.79 and 31,412.05

Step by Step Solution

1. Step 1: Write the proportion equation
   56,562.55 : 78,059.79 = 31,412.05 : x
2. Step 2: Convert to fraction form
   56,562.55/78,059.79 = 31,412.05/x
3. Step 3: Cross multiply
   56,562.55x = 78,059.79 × 31,412.05
4. Step 4: Simplify right side
   56,562.55x = 2,452,018,026.47
5. Step 5: Solve for x
   x = 2,452,018,026.47/56,562.55
6. Step 6: Final answer
   x = 43,350.56