Finding the Fourth Proportional to 62,209.16, 85,780.90 and 42,031.08

Step by Step Solution

1. Step 1: Write the proportion equation
   62,209.16 : 85,780.90 = 42,031.08 : x
2. Step 2: Convert to fraction form
   62,209.16/85,780.90 = 42,031.08/x
3. Step 3: Cross multiply
   62,209.16x = 85,780.90 × 42,031.08
4. Step 4: Simplify right side
   62,209.16x = 3,605,463,870.37
5. Step 5: Solve for x
   x = 3,605,463,870.37/62,209.16
6. Step 6: Final answer
   x = 57,957.12