Finding the Fourth Proportional to 123,113.61, 169,897.37 and 69,400.89

Step by Step Solution

1. Step 1: Write the proportion equation
   123,113.61 : 169,897.37 = 69,400.89 : x
2. Step 2: Convert to fraction form
   123,113.61/169,897.37 = 69,400.89/x
3. Step 3: Cross multiply
   123,113.61x = 169,897.37 × 69,400.89
4. Step 4: Simplify right side
   123,113.61x = 11,791,028,339.65
5. Step 5: Solve for x
   x = 11,791,028,339.65/123,113.61
6. Step 6: Final answer
   x = 95,773.56