Finding the Fourth Proportional to 152,869.96, 210,948.98 and 85,789

Step by Step Solution

1. Step 1: Write the proportion equation
   152,869.96 : 210,948.98 = 85,789 : x
2. Step 2: Convert to fraction form
   152,869.96/210,948.98 = 85,789/x
3. Step 3: Cross multiply
   152,869.96x = 210,948.98 × 85,789
4. Step 4: Simplify right side
   152,869.96x = 18,097,102,045.22
5. Step 5: Solve for x
   x = 18,097,102,045.22/152,869.96
6. Step 6: Final answer
   x = 118,382.33