Finding the Fourth Proportional to 153,020.16, 211,158.72 and 85,950.72

Step by Step Solution

1. Step 1: Write the proportion equation
   153,020.16 : 211,158.72 = 85,950.72 : x
2. Step 2: Convert to fraction form
   153,020.16/211,158.72 = 85,950.72/x
3. Step 3: Cross multiply
   153,020.16x = 211,158.72 × 85,950.72
4. Step 4: Simplify right side
   153,020.16x = 18,149,244,018.28
5. Step 5: Solve for x
   x = 18,149,244,018.28/153,020.16
6. Step 6: Final answer
   x = 118,606.88