Finding the Fourth Proportional to 106,503.78, 159,780.72 and 31,624.56

Step by Step Solution

1. Step 1: Write the proportion equation
   106,503.78 : 159,780.72 = 31,624.56 : x
2. Step 2: Convert to fraction form
   106,503.78/159,780.72 = 31,624.56/x
3. Step 3: Cross multiply
   106,503.78x = 159,780.72 × 31,624.56
4. Step 4: Simplify right side
   106,503.78x = 5,052,994,966.48
5. Step 5: Solve for x
   x = 5,052,994,966.48/106,503.78
6. Step 6: Final answer
   x = 47,444.28