Finding the Fourth Proportional to 77,404.61, 106,719.49 and 50,132.51

Step by Step Solution

1. Step 1: Write the proportion equation
   77,404.61 : 106,719.49 = 50,132.51 : x
2. Step 2: Convert to fraction form
   77,404.61/106,719.49 = 50,132.51/x
3. Step 3: Cross multiply
   77,404.61x = 106,719.49 × 50,132.51
4. Step 4: Simplify right side
   77,404.61x = 5,350,116,041.09
5. Step 5: Solve for x
   x = 5,350,116,041.09/77,404.61
6. Step 6: Final answer
   x = 69,118.83