Finding the Fourth Proportional to 72,510.12, 108,706.62 and 28,113.96

Step by Step Solution

1. Step 1: Write the proportion equation
   72,510.12 : 108,706.62 = 28,113.96 : x
2. Step 2: Convert to fraction form
   72,510.12/108,706.62 = 28,113.96/x
3. Step 3: Cross multiply
   72,510.12x = 108,706.62 × 28,113.96
4. Step 4: Simplify right side
   72,510.12x = 3,056,173,566.42
5. Step 5: Solve for x
   x = 3,056,173,566.42/72,510.12
6. Step 6: Final answer
   x = 42,148.23