Finding the Fourth Proportional to 71,905, 99,229.54 and 42,097.64

Step by Step Solution

1. Step 1: Write the proportion equation
   71,905 : 99,229.54 = 42,097.64 : x
2. Step 2: Convert to fraction form
   71,905/99,229.54 = 42,097.64/x
3. Step 3: Cross multiply
   71,905x = 99,229.54 × 42,097.64
4. Step 4: Simplify right side
   71,905x = 4,177,329,452.29
5. Step 5: Solve for x
   x = 4,177,329,452.29/71,905
6. Step 6: Final answer
   x = 58,095.12