Finding the Fourth Proportional to 111,307.50, 166,849.47 and 55,188.41

Step by Step Solution

1. Step 1: Write the proportion equation
   111,307.50 : 166,849.47 = 55,188.41 : x
2. Step 2: Convert to fraction form
   111,307.50/166,849.47 = 55,188.41/x
3. Step 3: Cross multiply
   111,307.50x = 166,849.47 × 55,188.41
4. Step 4: Simplify right side
   111,307.50x = 9,208,156,124.40
5. Step 5: Solve for x
   x = 9,208,156,124.40/111,307.50
6. Step 6: Final answer
   x = 82,727.18