Finding the Fourth Proportional to 126,345.56, 174,356.82 and 72,641.07

Step by Step Solution

1. Step 1: Write the proportion equation
   126,345.56 : 174,356.82 = 72,641.07 : x
2. Step 2: Convert to fraction form
   126,345.56/174,356.82 = 72,641.07/x
3. Step 3: Cross multiply
   126,345.56x = 174,356.82 × 72,641.07
4. Step 4: Simplify right side
   126,345.56x = 12,665,465,966.60
5. Step 5: Solve for x
   x = 12,665,465,966.60/126,345.56
6. Step 6: Final answer
   x = 100,244.65