Finding the Fourth Proportional to 62,256.87, 85,942.31 and 42,174.74

Step by Step Solution

1. Step 1: Write the proportion equation
   62,256.87 : 85,942.31 = 42,174.74 : x
2. Step 2: Convert to fraction form
   62,256.87/85,942.31 = 42,174.74/x
3. Step 3: Cross multiply
   62,256.87x = 85,942.31 × 42,174.74
4. Step 4: Simplify right side
   62,256.87x = 3,624,594,579.25
5. Step 5: Solve for x
   x = 3,624,594,579.25/62,256.87
6. Step 6: Final answer
   x = 58,219.99