Finding the Fourth Proportional to 85,370.55, 128,062.06 and 32,780.06

Step by Step Solution

1. Step 1: Write the proportion equation
   85,370.55 : 128,062.06 = 32,780.06 : x
2. Step 2: Convert to fraction form
   85,370.55/128,062.06 = 32,780.06/x
3. Step 3: Cross multiply
   85,370.55x = 128,062.06 × 32,780.06
4. Step 4: Simplify right side
   85,370.55x = 4,197,882,010.52
5. Step 5: Solve for x
   x = 4,197,882,010.52/85,370.55
6. Step 6: Final answer
   x = 49,172.48