Finding the Fourth Proportional to 107,382.90, 148,139.78 and 69,128.74

Step by Step Solution

1. Step 1: Write the proportion equation
   107,382.90 : 148,139.78 = 69,128.74 : x
2. Step 2: Convert to fraction form
   107,382.90/148,139.78 = 69,128.74/x
3. Step 3: Cross multiply
   107,382.90x = 148,139.78 × 69,128.74
4. Step 4: Simplify right side
   107,382.90x = 10,240,716,335.28
5. Step 5: Solve for x
   x = 10,240,716,335.28/107,382.90
6. Step 6: Final answer
   x = 95,366.36