Finding the Fourth Proportional to 60,402.69, 90,620.37 and 42,983.10

Step by Step Solution

1. Step 1: Write the proportion equation
   60,402.69 : 90,620.37 = 42,983.10 : x
2. Step 2: Convert to fraction form
   60,402.69/90,620.37 = 42,983.10/x
3. Step 3: Cross multiply
   60,402.69x = 90,620.37 × 42,983.10
4. Step 4: Simplify right side
   60,402.69x = 3,895,144,425.75
5. Step 5: Solve for x
   x = 3,895,144,425.75/60,402.69
6. Step 6: Final answer
   x = 64,486.27