Finding the Fourth Proportional to 42,762.96, 64,138.86 and 17,798.31

Step by Step Solution

1. Step 1: Write the proportion equation
   42,762.96 : 64,138.86 = 17,798.31 : x
2. Step 2: Convert to fraction form
   42,762.96/64,138.86 = 17,798.31/x
3. Step 3: Cross multiply
   42,762.96x = 64,138.86 × 17,798.31
4. Step 4: Simplify right side
   42,762.96x = 1,141,563,313.33
5. Step 5: Solve for x
   x = 1,141,563,313.33/42,762.96
6. Step 6: Final answer
   x = 26,695.14