Finding the Fourth Proportional to 72,362.27, 99,860.98 and 42,146.80

Step by Step Solution

1. Step 1: Write the proportion equation
   72,362.27 : 99,860.98 = 42,146.80 : x
2. Step 2: Convert to fraction form
   72,362.27/99,860.98 = 42,146.80/x
3. Step 3: Cross multiply
   72,362.27x = 99,860.98 × 42,146.80
4. Step 4: Simplify right side
   72,362.27x = 4,208,820,751.86
5. Step 5: Solve for x
   x = 4,208,820,751.86/72,362.27
6. Step 6: Final answer
   x = 58,163.19