Finding the Fourth Proportional to 123,111.79, 169,973.33 and 77,234.33

Step by Step Solution

1. Step 1: Write the proportion equation
   123,111.79 : 169,973.33 = 77,234.33 : x
2. Step 2: Convert to fraction form
   123,111.79/169,973.33 = 77,234.33/x
3. Step 3: Cross multiply
   123,111.79x = 169,973.33 × 77,234.33
4. Step 4: Simplify right side
   123,111.79x = 13,127,775,603.64
5. Step 5: Solve for x
   x = 13,127,775,603.64/123,111.79
6. Step 6: Final answer
   x = 106,632.97