Finding the Fourth Proportional to 83,429.40, 125,147.18 and 42,892.07

Step by Step Solution

1. Step 1: Write the proportion equation
   83,429.40 : 125,147.18 = 42,892.07 : x
2. Step 2: Convert to fraction form
   83,429.40/125,147.18 = 42,892.07/x
3. Step 3: Cross multiply
   83,429.40x = 125,147.18 × 42,892.07
4. Step 4: Simplify right side
   83,429.40x = 5,367,820,764.67
5. Step 5: Solve for x
   x = 5,367,820,764.67/83,429.40
6. Step 6: Final answer
   x = 64,339.68