Finding the Fourth Proportional to 81,892.38, 122,641.72 and 46,725.42

Step by Step Solution

1. Step 1: Write the proportion equation
   81,892.38 : 122,641.72 = 46,725.42 : x
2. Step 2: Convert to fraction form
   81,892.38/122,641.72 = 46,725.42/x
3. Step 3: Cross multiply
   81,892.38x = 122,641.72 × 46,725.42
4. Step 4: Simplify right side
   81,892.38x = 5,730,485,876.52
5. Step 5: Solve for x
   x = 5,730,485,876.52/81,892.38
6. Step 6: Final answer
   x = 69,975.81