Finding the Fourth Proportional to 77,748.16, 116,622.28 and 42,909.24

Step by Step Solution

1. Step 1: Write the proportion equation
   77,748.16 : 116,622.28 = 42,909.24 : x
2. Step 2: Convert to fraction form
   77,748.16/116,622.28 = 42,909.24/x
3. Step 3: Cross multiply
   77,748.16x = 116,622.28 × 42,909.24
4. Step 4: Simplify right side
   77,748.16x = 5,004,173,401.87
5. Step 5: Solve for x
   x = 5,004,173,401.87/77,748.16
6. Step 6: Final answer
   x = 64,363.88