Finding the Fourth Proportional to 139,381.91, 208,556.18 and 83,252.55

Step by Step Solution

1. Step 1: Write the proportion equation
   139,381.91 : 208,556.18 = 83,252.55 : x
2. Step 2: Convert to fraction form
   139,381.91/208,556.18 = 83,252.55/x
3. Step 3: Cross multiply
   139,381.91x = 208,556.18 × 83,252.55
4. Step 4: Simplify right side
   139,381.91x = 17,362,833,387.00
5. Step 5: Solve for x
   x = 17,362,833,387.00/139,381.91
6. Step 6: Final answer
   x = 124,570.21