Finding the Fourth Proportional to 123,100.84, 169,892 and 75,385.90

Step by Step Solution

1. Step 1: Write the proportion equation
   123,100.84 : 169,892 = 75,385.90 : x
2. Step 2: Convert to fraction form
   123,100.84/169,892 = 75,385.90/x
3. Step 3: Cross multiply
   123,100.84x = 169,892 × 75,385.90
4. Step 4: Simplify right side
   123,100.84x = 12,807,461,322.80
5. Step 5: Solve for x
   x = 12,807,461,322.80/123,100.84
6. Step 6: Final answer
   x = 104,040.41