Finding the Fourth Proportional to 81,083.53, 121,541.82 and 31,150.09

Step by Step Solution

1. Step 1: Write the proportion equation
   81,083.53 : 121,541.82 = 31,150.09 : x
2. Step 2: Convert to fraction form
   81,083.53/121,541.82 = 31,150.09/x
3. Step 3: Cross multiply
   81,083.53x = 121,541.82 × 31,150.09
4. Step 4: Simplify right side
   81,083.53x = 3,786,038,631.76
5. Step 5: Solve for x
   x = 3,786,038,631.76/81,083.53
6. Step 6: Final answer
   x = 46,693.07