Finding the Fourth Proportional to 65,849.69, 90,848.12 and 43,201.28

Step by Step Solution

1. Step 1: Write the proportion equation
   65,849.69 : 90,848.12 = 43,201.28 : x
2. Step 2: Convert to fraction form
   65,849.69/90,848.12 = 43,201.28/x
3. Step 3: Cross multiply
   65,849.69x = 90,848.12 × 43,201.28
4. Step 4: Simplify right side
   65,849.69x = 3,924,755,080.71
5. Step 5: Solve for x
   x = 3,924,755,080.71/65,849.69
6. Step 6: Final answer
   x = 59,601.72