Finding the Fourth Proportional to 109,505.32, 150,980.42 and 91,382.15

Step by Step Solution

1. Step 1: Write the proportion equation
   109,505.32 : 150,980.42 = 91,382.15 : x
2. Step 2: Convert to fraction form
   109,505.32/150,980.42 = 91,382.15/x
3. Step 3: Cross multiply
   109,505.32x = 150,980.42 × 91,382.15
4. Step 4: Simplify right side
   109,505.32x = 13,796,915,993.41
5. Step 5: Solve for x
   x = 13,796,915,993.41/109,505.32
6. Step 6: Final answer
   x = 125,993.11