Finding the Fourth Proportional to 72,981.78, 100,661.67 and 55,793.00

Step by Step Solution

1. Step 1: Write the proportion equation
   72,981.78 : 100,661.67 = 55,793.00 : x
2. Step 2: Convert to fraction form
   72,981.78/100,661.67 = 55,793.00/x
3. Step 3: Cross multiply
   72,981.78x = 100,661.67 × 55,793.00
4. Step 4: Simplify right side
   72,981.78x = 5,616,216,051.00
5. Step 5: Solve for x
   x = 5,616,216,051.00/72,981.78
6. Step 6: Final answer
   x = 76,953.67