Finding the Fourth Proportional to 139,342.88, 208,960.83 and 59,330.12

Step by Step Solution

1. Step 1: Write the proportion equation
   139,342.88 : 208,960.83 = 59,330.12 : x
2. Step 2: Convert to fraction form
   139,342.88/208,960.83 = 59,330.12/x
3. Step 3: Cross multiply
   139,342.88x = 208,960.83 × 59,330.12
4. Step 4: Simplify right side
   139,342.88x = 12,397,671,249.80
5. Step 5: Solve for x
   x = 12,397,671,249.80/139,342.88
6. Step 6: Final answer
   x = 88,972.40