Finding the Fourth Proportional to 58,671.16, 80,979.42 and 49,223.32

Step by Step Solution

1. Step 1: Write the proportion equation
   58,671.16 : 80,979.42 = 49,223.32 : x
2. Step 2: Convert to fraction form
   58,671.16/80,979.42 = 49,223.32/x
3. Step 3: Cross multiply
   58,671.16x = 80,979.42 × 49,223.32
4. Step 4: Simplify right side
   58,671.16x = 3,986,075,904.07
5. Step 5: Solve for x
   x = 3,986,075,904.07/58,671.16
6. Step 6: Final answer
   x = 67,939.27