Finding the Fourth Proportional to 83,426.94, 115,139.28 and 47,129.91

Step by Step Solution

1. Step 1: Write the proportion equation
   83,426.94 : 115,139.28 = 47,129.91 : x
2. Step 2: Convert to fraction form
   83,426.94/115,139.28 = 47,129.91/x
3. Step 3: Cross multiply
   83,426.94x = 115,139.28 × 47,129.91
4. Step 4: Simplify right side
   83,426.94x = 5,426,503,903.86
5. Step 5: Solve for x
   x = 5,426,503,903.86/83,426.94
6. Step 6: Final answer
   x = 65,044.98