Finding the Fourth Proportional to 139,667.40, 208,913.94 and 117,737.25

Step by Step Solution

1. Step 1: Write the proportion equation
   139,667.40 : 208,913.94 = 117,737.25 : x
2. Step 2: Convert to fraction form
   139,667.40/208,913.94 = 117,737.25/x
3. Step 3: Cross multiply
   139,667.40x = 208,913.94 × 117,737.25
4. Step 4: Simplify right side
   139,667.40x = 24,596,952,782.27
5. Step 5: Solve for x
   x = 24,596,952,782.27/139,667.40
6. Step 6: Final answer
   x = 176,110.91