Finding the Fourth Proportional to 123,113.21, 169,872.59 and 74,701.87

Step by Step Solution

1. Step 1: Write the proportion equation
   123,113.21 : 169,872.59 = 74,701.87 : x
2. Step 2: Convert to fraction form
   123,113.21/169,872.59 = 74,701.87/x
3. Step 3: Cross multiply
   123,113.21x = 169,872.59 × 74,701.87
4. Step 4: Simplify right side
   123,113.21x = 12,689,799,896.82
5. Step 5: Solve for x
   x = 12,689,799,896.82/123,113.21
6. Step 6: Final answer
   x = 103,074.24