Finding the Fourth Proportional to 40,842.06, 56,320.56 and 38,460.90

Step by Step Solution

1. Step 1: Write the proportion equation
   40,842.06 : 56,320.56 = 38,460.90 : x
2. Step 2: Convert to fraction form
   40,842.06/56,320.56 = 38,460.90/x
3. Step 3: Cross multiply
   40,842.06x = 56,320.56 × 38,460.90
4. Step 4: Simplify right side
   40,842.06x = 2,166,139,426.10
5. Step 5: Solve for x
   x = 2,166,139,426.10/40,842.06
6. Step 6: Final answer
   x = 53,036.98