Finding the Fourth Proportional to 111,156.78, 166,684.72 and 47,947.02

Step by Step Solution

1. Step 1: Write the proportion equation
   111,156.78 : 166,684.72 = 47,947.02 : x
2. Step 2: Convert to fraction form
   111,156.78/166,684.72 = 47,947.02/x
3. Step 3: Cross multiply
   111,156.78x = 166,684.72 × 47,947.02
4. Step 4: Simplify right side
   111,156.78x = 7,992,035,603.53
5. Step 5: Solve for x
   x = 7,992,035,603.53/111,156.78
6. Step 6: Final answer
   x = 71,898.77