Finding the Fourth Proportional to 112,510.27, 155,191.02 and 72,160.12

Step by Step Solution

1. Step 1: Write the proportion equation
   112,510.27 : 155,191.02 = 72,160.12 : x
2. Step 2: Convert to fraction form
   112,510.27/155,191.02 = 72,160.12/x
3. Step 3: Cross multiply
   112,510.27x = 155,191.02 × 72,160.12
4. Step 4: Simplify right side
   112,510.27x = 11,198,602,626.12
5. Step 5: Solve for x
   x = 11,198,602,626.12/112,510.27
6. Step 6: Final answer
   x = 99,534.05