Finding the Fourth Proportional to 109,142.32, 150,184.92 and 91,179.76

Step by Step Solution

1. Step 1: Write the proportion equation
   109,142.32 : 150,184.92 = 91,179.76 : x
2. Step 2: Convert to fraction form
   109,142.32/150,184.92 = 91,179.76/x
3. Step 3: Cross multiply
   109,142.32x = 150,184.92 × 91,179.76
4. Step 4: Simplify right side
   109,142.32x = 13,693,824,961.22
5. Step 5: Solve for x
   x = 13,693,824,961.22/109,142.32
6. Step 6: Final answer
   x = 125,467.60