Finding the Fourth Proportional to 72,123.81, 108,185.76 and 47,184.81

Step by Step Solution

1. Step 1: Write the proportion equation
   72,123.81 : 108,185.76 = 47,184.81 : x
2. Step 2: Convert to fraction form
   72,123.81/108,185.76 = 47,184.81/x
3. Step 3: Cross multiply
   72,123.81x = 108,185.76 × 47,184.81
4. Step 4: Simplify right side
   72,123.81x = 5,104,724,530.31
5. Step 5: Solve for x
   x = 5,104,724,530.31/72,123.81
6. Step 6: Final answer
   x = 70,777.24