Finding the Fourth Proportional to 440,978.58, 661,471.52 and 141,459.62

Step by Step Solution

1. Step 1: Write the proportion equation
   440,978.58 : 661,471.52 = 141,459.62 : x
2. Step 2: Convert to fraction form
   440,978.58/661,471.52 = 141,459.62/x
3. Step 3: Cross multiply
   440,978.58x = 661,471.52 × 141,459.62
4. Step 4: Simplify right side
   440,978.58x = 93,571,505,845.37
5. Step 5: Solve for x
   x = 93,571,505,845.37/440,978.58
6. Step 6: Final answer
   x = 212,190.59