Finding the Fourth Proportional to 71,784.80, 99,062.16 and 41,976.80

Step by Step Solution

1. Step 1: Write the proportion equation
   71,784.80 : 99,062.16 = 41,976.80 : x
2. Step 2: Convert to fraction form
   71,784.80/99,062.16 = 41,976.80/x
3. Step 3: Cross multiply
   71,784.80x = 99,062.16 × 41,976.80
4. Step 4: Simplify right side
   71,784.80x = 4,158,312,477.89
5. Step 5: Solve for x
   x = 4,158,312,477.89/71,784.80
6. Step 6: Final answer
   x = 57,927.48