Finding the Fourth Proportional to 152,676, 210,692.88 and 85,608

Step by Step Solution

1. Step 1: Write the proportion equation
   152,676 : 210,692.88 = 85,608 : x
2. Step 2: Convert to fraction form
   152,676/210,692.88 = 85,608/x
3. Step 3: Cross multiply
   152,676x = 210,692.88 × 85,608
4. Step 4: Simplify right side
   152,676x = 18,036,996,071.04
5. Step 5: Solve for x
   x = 18,036,996,071.04/152,676
6. Step 6: Final answer
   x = 118,139.04