Finding the Fourth Proportional to 152,016.93, 228,123.32 and 81,945.09

Step by Step Solution

1. Step 1: Write the proportion equation
   152,016.93 : 228,123.32 = 81,945.09 : x
2. Step 2: Convert to fraction form
   152,016.93/228,123.32 = 81,945.09/x
3. Step 3: Cross multiply
   152,016.93x = 228,123.32 × 81,945.09
4. Step 4: Simplify right side
   152,016.93x = 18,693,585,578.77
5. Step 5: Solve for x
   x = 18,693,585,578.77/152,016.93
6. Step 6: Final answer
   x = 122,970.42