Finding the Fourth Proportional to 221,978.80, 333,017.94 and 64,219.48

Step by Step Solution

1. Step 1: Write the proportion equation
   221,978.80 : 333,017.94 = 64,219.48 : x
2. Step 2: Convert to fraction form
   221,978.80/333,017.94 = 64,219.48/x
3. Step 3: Cross multiply
   221,978.80x = 333,017.94 × 64,219.48
4. Step 4: Simplify right side
   221,978.80x = 21,386,238,937.47
5. Step 5: Solve for x
   x = 21,386,238,937.47/221,978.80
6. Step 6: Final answer
   x = 96,343.61