Finding the Fourth Proportional to 60,372.95, 90,574.71 and 42,638.25

Step by Step Solution

1. Step 1: Write the proportion equation
   60,372.95 : 90,574.71 = 42,638.25 : x
2. Step 2: Convert to fraction form
   60,372.95/90,574.71 = 42,638.25/x
3. Step 3: Cross multiply
   60,372.95x = 90,574.71 × 42,638.25
4. Step 4: Simplify right side
   60,372.95x = 3,861,947,128.66
5. Step 5: Solve for x
   x = 3,861,947,128.66/60,372.95
6. Step 6: Final answer
   x = 63,968.17