Finding the Fourth Proportional to 114,521.15, 171,837.61 and 81,002.52

Step by Step Solution

1. Step 1: Write the proportion equation
   114,521.15 : 171,837.61 = 81,002.52 : x
2. Step 2: Convert to fraction form
   114,521.15/171,837.61 = 81,002.52/x
3. Step 3: Cross multiply
   114,521.15x = 171,837.61 × 81,002.52
4. Step 4: Simplify right side
   114,521.15x = 13,919,279,465.36
5. Step 5: Solve for x
   x = 13,919,279,465.36/114,521.15
6. Step 6: Final answer
   x = 121,543.31