Finding the Fourth Proportional to 83,422.31, 115,129.88 and 47,130.42

Step by Step Solution

1. Step 1: Write the proportion equation
   83,422.31 : 115,129.88 = 47,130.42 : x
2. Step 2: Convert to fraction form
   83,422.31/115,129.88 = 47,130.42/x
3. Step 3: Cross multiply
   83,422.31x = 115,129.88 × 47,130.42
4. Step 4: Simplify right side
   83,422.31x = 5,426,119,363.30
5. Step 5: Solve for x
   x = 5,426,119,363.30/83,422.31
6. Step 6: Final answer
   x = 65,043.99