Finding the Fourth Proportional to 152,123.06, 209,937.22 and 84,139.76

Step by Step Solution

1. Step 1: Write the proportion equation
   152,123.06 : 209,937.22 = 84,139.76 : x
2. Step 2: Convert to fraction form
   152,123.06/209,937.22 = 84,139.76/x
3. Step 3: Cross multiply
   152,123.06x = 209,937.22 × 84,139.76
4. Step 4: Simplify right side
   152,123.06x = 17,664,067,305.87
5. Step 5: Solve for x
   x = 17,664,067,305.87/152,123.06
6. Step 6: Final answer
   x = 116,116.96