Finding the Fourth Proportional to 109,157.39, 150,657.89 and 68,340.50

Step by Step Solution

1. Step 1: Write the proportion equation
   109,157.39 : 150,657.89 = 68,340.50 : x
2. Step 2: Convert to fraction form
   109,157.39/150,657.89 = 68,340.50/x
3. Step 3: Cross multiply
   109,157.39x = 150,657.89 × 68,340.50
4. Step 4: Simplify right side
   109,157.39x = 10,296,034,436.55
5. Step 5: Solve for x
   x = 10,296,034,436.55/109,157.39
6. Step 6: Final answer
   x = 94,322.84