Finding the Fourth Proportional to 152,849, 210,951.06 and 85,781

Step by Step Solution

1. Step 1: Write the proportion equation
   152,849 : 210,951.06 = 85,781 : x
2. Step 2: Convert to fraction form
   152,849/210,951.06 = 85,781/x
3. Step 3: Cross multiply
   152,849x = 210,951.06 × 85,781
4. Step 4: Simplify right side
   152,849x = 18,095,592,877.86
5. Step 5: Solve for x
   x = 18,095,592,877.86/152,849
6. Step 6: Final answer
   x = 118,388.69