Finding the Fourth Proportional to 152,526.32, 210,485.72 and 85,458.16

Step by Step Solution

1. Step 1: Write the proportion equation
   152,526.32 : 210,485.72 = 85,458.16 : x
2. Step 2: Convert to fraction form
   152,526.32/210,485.72 = 85,458.16/x
3. Step 3: Cross multiply
   152,526.32x = 210,485.72 × 85,458.16
4. Step 4: Simplify right side
   152,526.32x = 17,987,722,337.48
5. Step 5: Solve for x
   x = 17,987,722,337.48/152,526.32
6. Step 6: Final answer
   x = 117,931.92