Finding the Fourth Proportional to 123,989.89, 171,109.58 and 75,594.62

Step by Step Solution

1. Step 1: Write the proportion equation
   123,989.89 : 171,109.58 = 75,594.62 : x
2. Step 2: Convert to fraction form
   123,989.89/171,109.58 = 75,594.62/x
3. Step 3: Cross multiply
   123,989.89x = 171,109.58 × 75,594.62
4. Step 4: Simplify right side
   123,989.89x = 12,934,963,011.90
5. Step 5: Solve for x
   x = 12,934,963,011.90/123,989.89
6. Step 6: Final answer
   x = 104,322.73