Finding the Fourth Proportional to 57,066.10, 78,750.72 and 31,574.34

Step by Step Solution

1. Step 1: Write the proportion equation
   57,066.10 : 78,750.72 = 31,574.34 : x
2. Step 2: Convert to fraction form
   57,066.10/78,750.72 = 31,574.34/x
3. Step 3: Cross multiply
   57,066.10x = 78,750.72 × 31,574.34
4. Step 4: Simplify right side
   57,066.10x = 2,486,502,008.52
5. Step 5: Solve for x
   x = 2,486,502,008.52/57,066.10
6. Step 6: Final answer
   x = 43,572.32