Finding the Fourth Proportional to 77,320.72, 115,784.16 and 50,945.52

Step by Step Solution

1. Step 1: Write the proportion equation
   77,320.72 : 115,784.16 = 50,945.52 : x
2. Step 2: Convert to fraction form
   77,320.72/115,784.16 = 50,945.52/x
3. Step 3: Cross multiply
   77,320.72x = 115,784.16 × 50,945.52
4. Step 4: Simplify right side
   77,320.72x = 5,898,684,238.96
5. Step 5: Solve for x
   x = 5,898,684,238.96/77,320.72
6. Step 6: Final answer
   x = 76,288.53