Finding the Fourth Proportional to 42,139.41, 58,151.77 and 23,018.95

Step by Step Solution

1. Step 1: Write the proportion equation
   42,139.41 : 58,151.77 = 23,018.95 : x
2. Step 2: Convert to fraction form
   42,139.41/58,151.77 = 23,018.95/x
3. Step 3: Cross multiply
   42,139.41x = 58,151.77 × 23,018.95
4. Step 4: Simplify right side
   42,139.41x = 1,338,592,830.67
5. Step 5: Solve for x
   x = 1,338,592,830.67/42,139.41
6. Step 6: Final answer
   x = 31,765.82