Finding the Fourth Proportional to 123,974.10, 171,128.13 and 73,672.50

Step by Step Solution

1. Step 1: Write the proportion equation
   123,974.10 : 171,128.13 = 73,672.50 : x
2. Step 2: Convert to fraction form
   123,974.10/171,128.13 = 73,672.50/x
3. Step 3: Cross multiply
   123,974.10x = 171,128.13 × 73,672.50
4. Step 4: Simplify right side
   123,974.10x = 12,607,437,157.43
5. Step 5: Solve for x
   x = 12,607,437,157.43/123,974.10
6. Step 6: Final answer
   x = 101,694.12