Finding the Fourth Proportional to 139,123.54, 208,524.12 and 64,086.22

Step by Step Solution

1. Step 1: Write the proportion equation
   139,123.54 : 208,524.12 = 64,086.22 : x
2. Step 2: Convert to fraction form
   139,123.54/208,524.12 = 64,086.22/x
3. Step 3: Cross multiply
   139,123.54x = 208,524.12 × 64,086.22
4. Step 4: Simplify right side
   139,123.54x = 13,363,522,629.63
5. Step 5: Solve for x
   x = 13,363,522,629.63/139,123.54
6. Step 6: Final answer
   x = 96,055.08