Finding the Fourth Proportional to 123,111.29, 169,893.69 and 66,522.66

Step by Step Solution

1. Step 1: Write the proportion equation
   123,111.29 : 169,893.69 = 66,522.66 : x
2. Step 2: Convert to fraction form
   123,111.29/169,893.69 = 66,522.66/x
3. Step 3: Cross multiply
   123,111.29x = 169,893.69 × 66,522.66
4. Step 4: Simplify right side
   123,111.29x = 11,301,779,843.40
5. Step 5: Solve for x
   x = 11,301,779,843.40/123,111.29
6. Step 6: Final answer
   x = 91,801.33