Finding the Fourth Proportional to 42,906.48, 64,341.48 and 23,179.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,906.48 : 64,341.48 = 23,179.72 : x
2. Step 2: Convert to fraction form
   42,906.48/64,341.48 = 23,179.72/x
3. Step 3: Cross multiply
   42,906.48x = 64,341.48 × 23,179.72
4. Step 4: Simplify right side
   42,906.48x = 1,491,417,490.79
5. Step 5: Solve for x
   x = 1,491,417,490.79/42,906.48
6. Step 6: Final answer
   x = 34,759.73