Finding the Fourth Proportional to 123,131.64, 169,914.34 and 71,444.74

Step by Step Solution

1. Step 1: Write the proportion equation
   123,131.64 : 169,914.34 = 71,444.74 : x
2. Step 2: Convert to fraction form
   123,131.64/169,914.34 = 71,444.74/x
3. Step 3: Cross multiply
   123,131.64x = 169,914.34 × 71,444.74
4. Step 4: Simplify right side
   123,131.64x = 12,139,485,843.57
5. Step 5: Solve for x
   x = 12,139,485,843.57/123,131.64
6. Step 6: Final answer
   x = 98,589.49