Finding the Fourth Proportional to 77,215.72, 115,847.12 and 37,767.12

Step by Step Solution

1. Step 1: Write the proportion equation
   77,215.72 : 115,847.12 = 37,767.12 : x
2. Step 2: Convert to fraction form
   77,215.72/115,847.12 = 37,767.12/x
3. Step 3: Cross multiply
   77,215.72x = 115,847.12 × 37,767.12
4. Step 4: Simplify right side
   77,215.72x = 4,375,212,082.69
5. Step 5: Solve for x
   x = 4,375,212,082.69/77,215.72
6. Step 6: Final answer
   x = 56,662.19