Finding the Fourth Proportional to 49,470.72, 74,214.72 and 21,768

Step by Step Solution

1. Step 1: Write the proportion equation
   49,470.72 : 74,214.72 = 21,768 : x
2. Step 2: Convert to fraction form
   49,470.72/74,214.72 = 21,768/x
3. Step 3: Cross multiply
   49,470.72x = 74,214.72 × 21,768
4. Step 4: Simplify right side
   49,470.72x = 1,615,506,024.96
5. Step 5: Solve for x
   x = 1,615,506,024.96/49,470.72
6. Step 6: Final answer
   x = 32,655.80