Finding the Fourth Proportional to 60,034.72, 90,019.68 and 42,538.72

Step by Step Solution

1. Step 1: Write the proportion equation
   60,034.72 : 90,019.68 = 42,538.72 : x
2. Step 2: Convert to fraction form
   60,034.72/90,019.68 = 42,538.72/x
3. Step 3: Cross multiply
   60,034.72x = 90,019.68 × 42,538.72
4. Step 4: Simplify right side
   60,034.72x = 3,829,321,962.01
5. Step 5: Solve for x
   x = 3,829,321,962.01/60,034.72
6. Step 6: Final answer
   x = 63,785.12