Finding the Fourth Proportional to 152,317, 210,198.18 and 85,261.96

Step by Step Solution

1. Step 1: Write the proportion equation
   152,317 : 210,198.18 = 85,261.96 : x
2. Step 2: Convert to fraction form
   152,317/210,198.18 = 85,261.96/x
3. Step 3: Cross multiply
   152,317x = 210,198.18 × 85,261.96
4. Step 4: Simplify right side
   152,317x = 17,921,908,815.23
5. Step 5: Solve for x
   x = 17,921,908,815.23/152,317
6. Step 6: Final answer
   x = 117,661.91