Finding the Fourth Proportional to 141,012.52, 211,236.72 and 84,821.62

Step by Step Solution

1. Step 1: Write the proportion equation
   141,012.52 : 211,236.72 = 84,821.62 : x
2. Step 2: Convert to fraction form
   141,012.52/211,236.72 = 84,821.62/x
3. Step 3: Cross multiply
   141,012.52x = 211,236.72 × 84,821.62
4. Step 4: Simplify right side
   141,012.52x = 17,917,440,793.89
5. Step 5: Solve for x
   x = 17,917,440,793.89/141,012.52
6. Step 6: Final answer
   x = 127,062.77