Finding the Fourth Proportional to 62,438.46, 86,233.59 and 42,389.34

Step by Step Solution

1. Step 1: Write the proportion equation
   62,438.46 : 86,233.59 = 42,389.34 : x
2. Step 2: Convert to fraction form
   62,438.46/86,233.59 = 42,389.34/x
3. Step 3: Cross multiply
   62,438.46x = 86,233.59 × 42,389.34
4. Step 4: Simplify right side
   62,438.46x = 3,655,384,965.93
5. Step 5: Solve for x
   x = 3,655,384,965.93/62,438.46
6. Step 6: Final answer
   x = 58,543.80