Finding the Fourth Proportional to 81,897.84, 122,866.20 and 42,473.52

Step by Step Solution

1. Step 1: Write the proportion equation
   81,897.84 : 122,866.20 = 42,473.52 : x
2. Step 2: Convert to fraction form
   81,897.84/122,866.20 = 42,473.52/x
3. Step 3: Cross multiply
   81,897.84x = 122,866.20 × 42,473.52
4. Step 4: Simplify right side
   81,897.84x = 5,218,560,003.02
5. Step 5: Solve for x
   x = 5,218,560,003.02/81,897.84
6. Step 6: Final answer
   x = 63,720.36