Finding the Fourth Proportional to 139,116.96, 208,733.76 and 45,632.16

Step by Step Solution

1. Step 1: Write the proportion equation
   139,116.96 : 208,733.76 = 45,632.16 : x
2. Step 2: Convert to fraction form
   139,116.96/208,733.76 = 45,632.16/x
3. Step 3: Cross multiply
   139,116.96x = 208,733.76 × 45,632.16
4. Step 4: Simplify right side
   139,116.96x = 9,524,972,333.72
5. Step 5: Solve for x
   x = 9,524,972,333.72/139,116.96
6. Step 6: Final answer
   x = 68,467.37