Finding the Fourth Proportional to 62,900.28, 86,781.15 and 42,722.19

Step by Step Solution

1. Step 1: Write the proportion equation
   62,900.28 : 86,781.15 = 42,722.19 : x
2. Step 2: Convert to fraction form
   62,900.28/86,781.15 = 42,722.19/x
3. Step 3: Cross multiply
   62,900.28x = 86,781.15 × 42,722.19
4. Step 4: Simplify right side
   62,900.28x = 3,707,480,778.72
5. Step 5: Solve for x
   x = 3,707,480,778.72/62,900.28
6. Step 6: Final answer
   x = 58,942.20