Finding the Fourth Proportional to 87,426.89, 120,648.89 and 49,186.47

Step by Step Solution

1. Step 1: Write the proportion equation
   87,426.89 : 120,648.89 = 49,186.47 : x
2. Step 2: Convert to fraction form
   87,426.89/120,648.89 = 49,186.47/x
3. Step 3: Cross multiply
   87,426.89x = 120,648.89 × 49,186.47
4. Step 4: Simplify right side
   87,426.89x = 5,934,292,762.59
5. Step 5: Solve for x
   x = 5,934,292,762.59/87,426.89
6. Step 6: Final answer
   x = 67,877.21