Finding the Fourth Proportional to 139,304.16, 208,967.31 and 83,524.86

Step by Step Solution

1. Step 1: Write the proportion equation
   139,304.16 : 208,967.31 = 83,524.86 : x
2. Step 2: Convert to fraction form
   139,304.16/208,967.31 = 83,524.86/x
3. Step 3: Cross multiply
   139,304.16x = 208,967.31 × 83,524.86
4. Step 4: Simplify right side
   139,304.16x = 17,453,965,312.33
5. Step 5: Solve for x
   x = 17,453,965,312.33/139,304.16
6. Step 6: Final answer
   x = 125,293.93