Finding the Fourth Proportional to 211,222.37, 291,521.28 and 120,582.15

Step by Step Solution

1. Step 1: Write the proportion equation
   211,222.37 : 291,521.28 = 120,582.15 : x
2. Step 2: Convert to fraction form
   211,222.37/291,521.28 = 120,582.15/x
3. Step 3: Cross multiply
   211,222.37x = 291,521.28 × 120,582.15
4. Step 4: Simplify right side
   211,222.37x = 35,152,262,713.15
5. Step 5: Solve for x
   x = 35,152,262,713.15/211,222.37
6. Step 6: Final answer
   x = 166,423.01