Finding the Fourth Proportional to 88,978.23, 122,923.29 and 58,423.80

Step by Step Solution

1. Step 1: Write the proportion equation
   88,978.23 : 122,923.29 = 58,423.80 : x
2. Step 2: Convert to fraction form
   88,978.23/122,923.29 = 58,423.80/x
3. Step 3: Cross multiply
   88,978.23x = 122,923.29 × 58,423.80
4. Step 4: Simplify right side
   88,978.23x = 7,181,645,710.30
5. Step 5: Solve for x
   x = 7,181,645,710.30/88,978.23
6. Step 6: Final answer
   x = 80,712.39