Finding the Fourth Proportional to 152,390.52, 210,298.68 and 85,322.52

Step by Step Solution

1. Step 1: Write the proportion equation
   152,390.52 : 210,298.68 = 85,322.52 : x
2. Step 2: Convert to fraction form
   152,390.52/210,298.68 = 85,322.52/x
3. Step 3: Cross multiply
   152,390.52x = 210,298.68 × 85,322.52
4. Step 4: Simplify right side
   152,390.52x = 17,943,213,330.27
5. Step 5: Solve for x
   x = 17,943,213,330.27/152,390.52
6. Step 6: Final answer
   x = 117,744.94