Finding the Fourth Proportional to 101,785.31, 152,522.27 and 54,407.15

Step by Step Solution

1. Step 1: Write the proportion equation
   101,785.31 : 152,522.27 = 54,407.15 : x
2. Step 2: Convert to fraction form
   101,785.31/152,522.27 = 54,407.15/x
3. Step 3: Cross multiply
   101,785.31x = 152,522.27 × 54,407.15
4. Step 4: Simplify right side
   101,785.31x = 8,298,300,987.58
5. Step 5: Solve for x
   x = 8,298,300,987.58/101,785.31
6. Step 6: Final answer
   x = 81,527.50