Finding the Fourth Proportional to 72,786.45, 100,408.50 and 42,552.06

Step by Step Solution

1. Step 1: Write the proportion equation
   72,786.45 : 100,408.50 = 42,552.06 : x
2. Step 2: Convert to fraction form
   72,786.45/100,408.50 = 42,552.06/x
3. Step 3: Cross multiply
   72,786.45x = 100,408.50 × 42,552.06
4. Step 4: Simplify right side
   72,786.45x = 4,272,588,516.51
5. Step 5: Solve for x
   x = 4,272,588,516.51/72,786.45
6. Step 6: Final answer
   x = 58,700.33