Finding the Fourth Proportional to 90,137.28, 124,385.69 and 49,300.75

Step by Step Solution

1. Step 1: Write the proportion equation
   90,137.28 : 124,385.69 = 49,300.75 : x
2. Step 2: Convert to fraction form
   90,137.28/124,385.69 = 49,300.75/x
3. Step 3: Cross multiply
   90,137.28x = 124,385.69 × 49,300.75
4. Step 4: Simplify right side
   90,137.28x = 6,132,308,085.00
5. Step 5: Solve for x
   x = 6,132,308,085.00/90,137.28
6. Step 6: Final answer
   x = 68,032.98