Finding the Fourth Proportional to 60,030.72, 90,013.68 and 42,534.72

Step by Step Solution

1. Step 1: Write the proportion equation
   60,030.72 : 90,013.68 = 42,534.72 : x
2. Step 2: Convert to fraction form
   60,030.72/90,013.68 = 42,534.72/x
3. Step 3: Cross multiply
   60,030.72x = 90,013.68 × 42,534.72
4. Step 4: Simplify right side
   60,030.72x = 3,828,706,674.97
5. Step 5: Solve for x
   x = 3,828,706,674.97/60,030.72
6. Step 6: Final answer
   x = 63,779.12