Finding the Fourth Proportional to 72,131.44, 99,579.96 and 48,298.72

Step by Step Solution

1. Step 1: Write the proportion equation
   72,131.44 : 99,579.96 = 48,298.72 : x
2. Step 2: Convert to fraction form
   72,131.44/99,579.96 = 48,298.72/x
3. Step 3: Cross multiply
   72,131.44x = 99,579.96 × 48,298.72
4. Step 4: Simplify right side
   72,131.44x = 4,809,584,605.65
5. Step 5: Solve for x
   x = 4,809,584,605.65/72,131.44
6. Step 6: Final answer
   x = 66,678.06