Finding the Fourth Proportional to 109,269.16, 163,981.50 and 84,334.12

Step by Step Solution

1. Step 1: Write the proportion equation
   109,269.16 : 163,981.50 = 84,334.12 : x
2. Step 2: Convert to fraction form
   109,269.16/163,981.50 = 84,334.12/x
3. Step 3: Cross multiply
   109,269.16x = 163,981.50 × 84,334.12
4. Step 4: Simplify right side
   109,269.16x = 13,829,235,498.78
5. Step 5: Solve for x
   x = 13,829,235,498.78/109,269.16
6. Step 6: Final answer
   x = 126,561.20