Finding the Fourth Proportional to 298,065.78, 447,098.78 and 73,430.58

Step by Step Solution

1. Step 1: Write the proportion equation
   298,065.78 : 447,098.78 = 73,430.58 : x
2. Step 2: Convert to fraction form
   298,065.78/447,098.78 = 73,430.58/x
3. Step 3: Cross multiply
   298,065.78x = 447,098.78 × 73,430.58
4. Step 4: Simplify right side
   298,065.78x = 32,830,721,798.52
5. Step 5: Solve for x
   x = 32,830,721,798.52/298,065.78
6. Step 6: Final answer
   x = 110,145.89