Finding the Fourth Proportional to 72,437.08, 99,973.42 and 40,178.82

Step by Step Solution

1. Step 1: Write the proportion equation
   72,437.08 : 99,973.42 = 40,178.82 : x
2. Step 2: Convert to fraction form
   72,437.08/99,973.42 = 40,178.82/x
3. Step 3: Cross multiply
   72,437.08x = 99,973.42 × 40,178.82
4. Step 4: Simplify right side
   72,437.08x = 4,016,814,046.96
5. Step 5: Solve for x
   x = 4,016,814,046.96/72,437.08
6. Step 6: Final answer
   x = 55,452.46