Finding the Fourth Proportional to 152,638.50, 210,633.78 and 84,650.10

Step by Step Solution

1. Step 1: Write the proportion equation
   152,638.50 : 210,633.78 = 84,650.10 : x
2. Step 2: Convert to fraction form
   152,638.50/210,633.78 = 84,650.10/x
3. Step 3: Cross multiply
   152,638.50x = 210,633.78 × 84,650.10
4. Step 4: Simplify right side
   152,638.50x = 17,830,170,540.38
5. Step 5: Solve for x
   x = 17,830,170,540.38/152,638.50
6. Step 6: Final answer
   x = 116,813.06