Finding the Fourth Proportional to 369,796.72, 555,009.72 and 145,314.04

Step by Step Solution

1. Step 1: Write the proportion equation
   369,796.72 : 555,009.72 = 145,314.04 : x
2. Step 2: Convert to fraction form
   369,796.72/555,009.72 = 145,314.04/x
3. Step 3: Cross multiply
   369,796.72x = 555,009.72 × 145,314.04
4. Step 4: Simplify right side
   369,796.72x = 80,650,704,652.47
5. Step 5: Solve for x
   x = 80,650,704,652.47/369,796.72
6. Step 6: Final answer
   x = 218,094.70