Finding the Fourth Proportional to 400,682.34, 601,120.71 and 120,199.59

Step by Step Solution

1. Step 1: Write the proportion equation
   400,682.34 : 601,120.71 = 120,199.59 : x
2. Step 2: Convert to fraction form
   400,682.34/601,120.71 = 120,199.59/x
3. Step 3: Cross multiply
   400,682.34x = 601,120.71 × 120,199.59
4. Step 4: Simplify right side
   400,682.34x = 72,254,462,882.51
5. Step 5: Solve for x
   x = 72,254,462,882.51/400,682.34
6. Step 6: Final answer
   x = 180,328.54