Finding the Fourth Proportional to 101,819.84, 140,510.96 and 56,504.72

Step by Step Solution

1. Step 1: Write the proportion equation
   101,819.84 : 140,510.96 = 56,504.72 : x
2. Step 2: Convert to fraction form
   101,819.84/140,510.96 = 56,504.72/x
3. Step 3: Cross multiply
   101,819.84x = 140,510.96 × 56,504.72
4. Step 4: Simplify right side
   101,819.84x = 7,939,532,451.73
5. Step 5: Solve for x
   x = 7,939,532,451.73/101,819.84
6. Step 6: Final answer
   x = 77,976.28