Finding the Fourth Proportional to 49,792.68, 74,752.20 and 42,816.96

Step by Step Solution

1. Step 1: Write the proportion equation
   49,792.68 : 74,752.20 = 42,816.96 : x
2. Step 2: Convert to fraction form
   49,792.68/74,752.20 = 42,816.96/x
3. Step 3: Cross multiply
   49,792.68x = 74,752.20 × 42,816.96
4. Step 4: Simplify right side
   49,792.68x = 3,200,661,957.31
5. Step 5: Solve for x
   x = 3,200,661,957.31/49,792.68
6. Step 6: Final answer
   x = 64,279.77