Finding the Fourth Proportional to 139,149.96, 208,553.86 and 64,166.01

Step by Step Solution

1. Step 1: Write the proportion equation
   139,149.96 : 208,553.86 = 64,166.01 : x
2. Step 2: Convert to fraction form
   139,149.96/208,553.86 = 64,166.01/x
3. Step 3: Cross multiply
   139,149.96x = 208,553.86 × 64,166.01
4. Step 4: Simplify right side
   139,149.96x = 13,382,069,066.30
5. Step 5: Solve for x
   x = 13,382,069,066.30/139,149.96
6. Step 6: Final answer
   x = 96,170.13