Finding the Fourth Proportional to 77,451.61, 116,168.18 and 21,297.42

Step by Step Solution

1. Step 1: Write the proportion equation
   77,451.61 : 116,168.18 = 21,297.42 : x
2. Step 2: Convert to fraction form
   77,451.61/116,168.18 = 21,297.42/x
3. Step 3: Cross multiply
   77,451.61x = 116,168.18 × 21,297.42
4. Step 4: Simplify right side
   77,451.61x = 2,474,082,520.10
5. Step 5: Solve for x
   x = 2,474,082,520.10/77,451.61
6. Step 6: Final answer
   x = 31,943.59