Finding the Fourth Proportional to 90,159.46, 124,378.15 and 58,338.61

Step by Step Solution

1. Step 1: Write the proportion equation
   90,159.46 : 124,378.15 = 58,338.61 : x
2. Step 2: Convert to fraction form
   90,159.46/124,378.15 = 58,338.61/x
3. Step 3: Cross multiply
   90,159.46x = 124,378.15 × 58,338.61
4. Step 4: Simplify right side
   90,159.46x = 7,256,048,385.37
5. Step 5: Solve for x
   x = 7,256,048,385.37/90,159.46
6. Step 6: Final answer
   x = 80,480.17