Finding the Fourth Proportional to 472,491.76, 708,540.57 and 148,196.30

Step by Step Solution

1. Step 1: Write the proportion equation
   472,491.76 : 708,540.57 = 148,196.30 : x
2. Step 2: Convert to fraction form
   472,491.76/708,540.57 = 148,196.30/x
3. Step 3: Cross multiply
   472,491.76x = 708,540.57 × 148,196.30
4. Step 4: Simplify right side
   472,491.76x = 105,003,090,873.89
5. Step 5: Solve for x
   x = 105,003,090,873.89/472,491.76
6. Step 6: Final answer
   x = 222,232.64