Finding the Fourth Proportional to 152,398, 210,302.76 and 84,414.70

Step by Step Solution

1. Step 1: Write the proportion equation
   152,398 : 210,302.76 = 84,414.70 : x
2. Step 2: Convert to fraction form
   152,398/210,302.76 = 84,414.70/x
3. Step 3: Cross multiply
   152,398x = 210,302.76 × 84,414.70
4. Step 4: Simplify right side
   152,398x = 17,752,644,394.57
5. Step 5: Solve for x
   x = 17,752,644,394.57/152,398
6. Step 6: Final answer
   x = 116,488.70