Finding the Fourth Proportional to 139,995.42, 209,759.37 and 98,367.90

Step by Step Solution

1. Step 1: Write the proportion equation
   139,995.42 : 209,759.37 = 98,367.90 : x
2. Step 2: Convert to fraction form
   139,995.42/209,759.37 = 98,367.90/x
3. Step 3: Cross multiply
   139,995.42x = 209,759.37 × 98,367.90
4. Step 4: Simplify right side
   139,995.42x = 20,633,588,732.22
5. Step 5: Solve for x
   x = 20,633,588,732.22/139,995.42
6. Step 6: Final answer
   x = 147,387.60