Finding the Fourth Proportional to 81,060.42, 121,522.59 and 28,504.38

Step by Step Solution

1. Step 1: Write the proportion equation
   81,060.42 : 121,522.59 = 28,504.38 : x
2. Step 2: Convert to fraction form
   81,060.42/121,522.59 = 28,504.38/x
3. Step 3: Cross multiply
   81,060.42x = 121,522.59 × 28,504.38
4. Step 4: Simplify right side
   81,060.42x = 3,463,926,083.94
5. Step 5: Solve for x
   x = 3,463,926,083.94/81,060.42
6. Step 6: Final answer
   x = 42,732.64