Finding the Fourth Proportional to 364,100.67, 545,798.31 and 139,287.99

Step by Step Solution

1. Step 1: Write the proportion equation
   364,100.67 : 545,798.31 = 139,287.99 : x
2. Step 2: Convert to fraction form
   364,100.67/545,798.31 = 139,287.99/x
3. Step 3: Cross multiply
   364,100.67x = 545,798.31 × 139,287.99
4. Step 4: Simplify right side
   364,100.67x = 76,023,149,545.30
5. Step 5: Solve for x
   x = 76,023,149,545.30/364,100.67
6. Step 6: Final answer
   x = 208,797.06