Finding the Fourth Proportional to 139,594.00, 208,862.60 and 82,698.45

Step by Step Solution

1. Step 1: Write the proportion equation
   139,594.00 : 208,862.60 = 82,698.45 : x
2. Step 2: Convert to fraction form
   139,594.00/208,862.60 = 82,698.45/x
3. Step 3: Cross multiply
   139,594.00x = 208,862.60 × 82,698.45
4. Step 4: Simplify right side
   139,594.00x = 17,272,613,812.01
5. Step 5: Solve for x
   x = 17,272,613,812.01/139,594.00
6. Step 6: Final answer
   x = 123,734.64