Finding the Fourth Proportional to 123,017.90, 169,777.24 and 75,302.78

Step by Step Solution

1. Step 1: Write the proportion equation
   123,017.90 : 169,777.24 = 75,302.78 : x
2. Step 2: Convert to fraction form
   123,017.90/169,777.24 = 75,302.78/x
3. Step 3: Cross multiply
   123,017.90x = 169,777.24 × 75,302.78
4. Step 4: Simplify right side
   123,017.90x = 12,784,697,115.58
5. Step 5: Solve for x
   x = 12,784,697,115.58/123,017.90
6. Step 6: Final answer
   x = 103,925.51