Finding the Fourth Proportional to 139,030.14, 208,597.41 and 64,186.14

Step by Step Solution

1. Step 1: Write the proportion equation
   139,030.14 : 208,597.41 = 64,186.14 : x
2. Step 2: Convert to fraction form
   139,030.14/208,597.41 = 64,186.14/x
3. Step 3: Cross multiply
   139,030.14x = 208,597.41 × 64,186.14
4. Step 4: Simplify right side
   139,030.14x = 13,389,062,561.90
5. Step 5: Solve for x
   x = 13,389,062,561.90/139,030.14
6. Step 6: Final answer
   x = 96,303.31