Finding the Fourth Proportional to 152,859, 210,945.42 and 85,791

Step by Step Solution

1. Step 1: Write the proportion equation
   152,859 : 210,945.42 = 85,791 : x
2. Step 2: Convert to fraction form
   152,859/210,945.42 = 85,791/x
3. Step 3: Cross multiply
   152,859x = 210,945.42 × 85,791
4. Step 4: Simplify right side
   152,859x = 18,097,218,527.22
5. Step 5: Solve for x
   x = 18,097,218,527.22/152,859
6. Step 6: Final answer
   x = 118,391.58