Finding the Fourth Proportional to 139,099.52, 208,656.48 and 105,871.52

Step by Step Solution

1. Step 1: Write the proportion equation
   139,099.52 : 208,656.48 = 105,871.52 : x
2. Step 2: Convert to fraction form
   139,099.52/208,656.48 = 105,871.52/x
3. Step 3: Cross multiply
   139,099.52x = 208,656.48 × 105,871.52
4. Step 4: Simplify right side
   139,099.52x = 22,090,778,695.45
5. Step 5: Solve for x
   x = 22,090,778,695.45/139,099.52
6. Step 6: Final answer
   x = 158,812.76