Finding the Fourth Proportional to 152,749, 210,794.34 and 85,681

Step by Step Solution

1. Step 1: Write the proportion equation
   152,749 : 210,794.34 = 85,681 : x
2. Step 2: Convert to fraction form
   152,749/210,794.34 = 85,681/x
3. Step 3: Cross multiply
   152,749x = 210,794.34 × 85,681
4. Step 4: Simplify right side
   152,749x = 18,061,069,845.54
5. Step 5: Solve for x
   x = 18,061,069,845.54/152,749
6. Step 6: Final answer
   x = 118,240.18