Finding the Fourth Proportional to 139,055.16, 208,580.58 and 55,947

Step by Step Solution

1. Step 1: Write the proportion equation
   139,055.16 : 208,580.58 = 55,947 : x
2. Step 2: Convert to fraction form
   139,055.16/208,580.58 = 55,947/x
3. Step 3: Cross multiply
   139,055.16x = 208,580.58 × 55,947
4. Step 4: Simplify right side
   139,055.16x = 11,669,457,709.26
5. Step 5: Solve for x
   x = 11,669,457,709.26/139,055.16
6. Step 6: Final answer
   x = 83,919.63