Finding the Fourth Proportional to 74,586.72, 111,880.12 and 51,142.08

Step by Step Solution

1. Step 1: Write the proportion equation
   74,586.72 : 111,880.12 = 51,142.08 : x
2. Step 2: Convert to fraction form
   74,586.72/111,880.12 = 51,142.08/x
3. Step 3: Cross multiply
   74,586.72x = 111,880.12 × 51,142.08
4. Step 4: Simplify right side
   74,586.72x = 5,721,782,047.45
5. Step 5: Solve for x
   x = 5,721,782,047.45/74,586.72
6. Step 6: Final answer
   x = 76,713.15