Finding the Fourth Proportional to 50,120.79, 69,008.90 and 42,552.15

Step by Step Solution

1. Step 1: Write the proportion equation
   50,120.79 : 69,008.90 = 42,552.15 : x
2. Step 2: Convert to fraction form
   50,120.79/69,008.90 = 42,552.15/x
3. Step 3: Cross multiply
   50,120.79x = 69,008.90 × 42,552.15
4. Step 4: Simplify right side
   50,120.79x = 2,936,476,851.37
5. Step 5: Solve for x
   x = 2,936,476,851.37/50,120.79
6. Step 6: Final answer
   x = 58,588.00