Finding the Fourth Proportional to 81,348.80, 121,997.28 and 41,900.72

Step by Step Solution

1. Step 1: Write the proportion equation
   81,348.80 : 121,997.28 = 41,900.72 : x
2. Step 2: Convert to fraction form
   81,348.80/121,997.28 = 41,900.72/x
3. Step 3: Cross multiply
   81,348.80x = 121,997.28 × 41,900.72
4. Step 4: Simplify right side
   81,348.80x = 5,111,773,870.04
5. Step 5: Solve for x
   x = 5,111,773,870.04/81,348.80
6. Step 6: Final answer
   x = 62,837.73