Finding the Fourth Proportional to 109,139.52, 150,602.04 and 66,740.88

Step by Step Solution

1. Step 1: Write the proportion equation
   109,139.52 : 150,602.04 = 66,740.88 : x
2. Step 2: Convert to fraction form
   109,139.52/150,602.04 = 66,740.88/x
3. Step 3: Cross multiply
   109,139.52x = 150,602.04 × 66,740.88
4. Step 4: Simplify right side
   109,139.52x = 10,051,312,679.40
5. Step 5: Solve for x
   x = 10,051,312,679.40/109,139.52
6. Step 6: Final answer
   x = 92,095.99