Finding the Fourth Proportional to 139,073.16, 208,607.58 and 55,965

Step by Step Solution

1. Step 1: Write the proportion equation
   139,073.16 : 208,607.58 = 55,965 : x
2. Step 2: Convert to fraction form
   139,073.16/208,607.58 = 55,965/x
3. Step 3: Cross multiply
   139,073.16x = 208,607.58 × 55,965
4. Step 4: Simplify right side
   139,073.16x = 11,674,723,214.70
5. Step 5: Solve for x
   x = 11,674,723,214.70/139,073.16
6. Step 6: Final answer
   x = 83,946.63