Finding the Fourth Proportional to 152,530.32, 210,491.24 and 85,462.16

Step by Step Solution

1. Step 1: Write the proportion equation
   152,530.32 : 210,491.24 = 85,462.16 : x
2. Step 2: Convert to fraction form
   152,530.32/210,491.24 = 85,462.16/x
3. Step 3: Cross multiply
   152,530.32x = 210,491.24 × 85,462.16
4. Step 4: Simplify right side
   152,530.32x = 17,989,036,031.48
5. Step 5: Solve for x
   x = 17,989,036,031.48/152,530.32
6. Step 6: Final answer
   x = 117,937.44