Finding the Fourth Proportional to 141,113.89, 211,707.72 and 81,892.63

Step by Step Solution

1. Step 1: Write the proportion equation
   141,113.89 : 211,707.72 = 81,892.63 : x
2. Step 2: Convert to fraction form
   141,113.89/211,707.72 = 81,892.63/x
3. Step 3: Cross multiply
   141,113.89x = 211,707.72 × 81,892.63
4. Step 4: Simplify right side
   141,113.89x = 17,337,301,452.83
5. Step 5: Solve for x
   x = 17,337,301,452.83/141,113.89
6. Step 6: Final answer
   x = 122,860.35