Finding the Fourth Proportional to 88,833.20, 133,031.10 and 42,031.40

Step by Step Solution

1. Step 1: Write the proportion equation
   88,833.20 : 133,031.10 = 42,031.40 : x
2. Step 2: Convert to fraction form
   88,833.20/133,031.10 = 42,031.40/x
3. Step 3: Cross multiply
   88,833.20x = 133,031.10 × 42,031.40
4. Step 4: Simplify right side
   88,833.20x = 5,591,483,376.54
5. Step 5: Solve for x
   x = 5,591,483,376.54/88,833.20
6. Step 6: Final answer
   x = 62,943.62