Finding the Fourth Proportional to 42,216.93, 58,245.29 and 24,990.21

Step by Step Solution

1. Step 1: Write the proportion equation
   42,216.93 : 58,245.29 = 24,990.21 : x
2. Step 2: Convert to fraction form
   42,216.93/58,245.29 = 24,990.21/x
3. Step 3: Cross multiply
   42,216.93x = 58,245.29 × 24,990.21
4. Step 4: Simplify right side
   42,216.93x = 1,455,562,028.61
5. Step 5: Solve for x
   x = 1,455,562,028.61/42,216.93
6. Step 6: Final answer
   x = 34,478.16