Finding the Fourth Proportional to 57,372.48, 79,151.90 and 42,300.90

Step by Step Solution

1. Step 1: Write the proportion equation
   57,372.48 : 79,151.90 = 42,300.90 : x
2. Step 2: Convert to fraction form
   57,372.48/79,151.90 = 42,300.90/x
3. Step 3: Cross multiply
   57,372.48x = 79,151.90 × 42,300.90
4. Step 4: Simplify right side
   57,372.48x = 3,348,196,606.71
5. Step 5: Solve for x
   x = 3,348,196,606.71/57,372.48
6. Step 6: Final answer
   x = 58,358.93