Finding the Fourth Proportional to 72,345.89, 99,835.00 and 40,079.18

Step by Step Solution

1. Step 1: Write the proportion equation
   72,345.89 : 99,835.00 = 40,079.18 : x
2. Step 2: Convert to fraction form
   72,345.89/99,835.00 = 40,079.18/x
3. Step 3: Cross multiply
   72,345.89x = 99,835.00 × 40,079.18
4. Step 4: Simplify right side
   72,345.89x = 4,001,305,084.69
5. Step 5: Solve for x
   x = 4,001,305,084.69/72,345.89
6. Step 6: Final answer
   x = 55,307.98