Finding the Fourth Proportional to 99,806.18, 137,727.27 and 54,475.37

Step by Step Solution

1. Step 1: Write the proportion equation
   99,806.18 : 137,727.27 = 54,475.37 : x
2. Step 2: Convert to fraction form
   99,806.18/137,727.27 = 54,475.37/x
3. Step 3: Cross multiply
   99,806.18x = 137,727.27 × 54,475.37
4. Step 4: Simplify right side
   99,806.18x = 7,502,743,992.34
5. Step 5: Solve for x
   x = 7,502,743,992.34/99,806.18
6. Step 6: Final answer
   x = 75,173.14