Finding the Fourth Proportional to 77,036.94, 115,505.55 and 50,661.72

Step by Step Solution

1. Step 1: Write the proportion equation
   77,036.94 : 115,505.55 = 50,661.72 : x
2. Step 2: Convert to fraction form
   77,036.94/115,505.55 = 50,661.72/x
3. Step 3: Cross multiply
   77,036.94x = 115,505.55 × 50,661.72
4. Step 4: Simplify right side
   77,036.94x = 5,851,709,832.55
5. Step 5: Solve for x
   x = 5,851,709,832.55/77,036.94
6. Step 6: Final answer
   x = 75,959.79