Finding the Fourth Proportional to 125,436.80, 188,185.52 and 72,162.88

Step by Step Solution

1. Step 1: Write the proportion equation
   125,436.80 : 188,185.52 = 72,162.88 : x
2. Step 2: Convert to fraction form
   125,436.80/188,185.52 = 72,162.88/x
3. Step 3: Cross multiply
   125,436.80x = 188,185.52 × 72,162.88
4. Step 4: Simplify right side
   125,436.80x = 13,580,009,097.50
5. Step 5: Solve for x
   x = 13,580,009,097.50/125,436.80
6. Step 6: Final answer
   x = 108,261.76