Finding the Fourth Proportional to 42,688.72, 58,905 and 23,826.64

Step by Step Solution

1. Step 1: Write the proportion equation
   42,688.72 : 58,905 = 23,826.64 : x
2. Step 2: Convert to fraction form
   42,688.72/58,905 = 23,826.64/x
3. Step 3: Cross multiply
   42,688.72x = 58,905 × 23,826.64
4. Step 4: Simplify right side
   42,688.72x = 1,403,508,229.20
5. Step 5: Solve for x
   x = 1,403,508,229.20/42,688.72
6. Step 6: Final answer
   x = 32,877.73