Finding the Fourth Proportional to 72,087.56, 99,483.64 and 39,823.84

Step by Step Solution

1. Step 1: Write the proportion equation
   72,087.56 : 99,483.64 = 39,823.84 : x
2. Step 2: Convert to fraction form
   72,087.56/99,483.64 = 39,823.84/x
3. Step 3: Cross multiply
   72,087.56x = 99,483.64 × 39,823.84
4. Step 4: Simplify right side
   72,087.56x = 3,961,820,213.71
5. Step 5: Solve for x
   x = 3,961,820,213.71/72,087.56
6. Step 6: Final answer
   x = 54,958.45