Finding the Fourth Proportional to 357,995.34, 536,964.72 and 208,140

Step by Step Solution

1. Step 1: Write the proportion equation
   357,995.34 : 536,964.72 = 208,140 : x
2. Step 2: Convert to fraction form
   357,995.34/536,964.72 = 208,140/x
3. Step 3: Cross multiply
   357,995.34x = 536,964.72 × 208,140
4. Step 4: Simplify right side
   357,995.34x = 111,763,836,820.80
5. Step 5: Solve for x
   x = 111,763,836,820.80/357,995.34
6. Step 6: Final answer
   x = 312,193.55