Finding the Fourth Proportional to 42,222.79, 58,275.48 and 30,155.95

Step by Step Solution

1. Step 1: Write the proportion equation
   42,222.79 : 58,275.48 = 30,155.95 : x
2. Step 2: Convert to fraction form
   42,222.79/58,275.48 = 30,155.95/x
3. Step 3: Cross multiply
   42,222.79x = 58,275.48 × 30,155.95
4. Step 4: Simplify right side
   42,222.79x = 1,757,352,461.11
5. Step 5: Solve for x
   x = 1,757,352,461.11/42,222.79
6. Step 6: Final answer
   x = 41,620.95