Finding the Fourth Proportional to 56,815.10, 78,411.57 and 34,165.67

Step by Step Solution

1. Step 1: Write the proportion equation
   56,815.10 : 78,411.57 = 34,165.67 : x
2. Step 2: Convert to fraction form
   56,815.10/78,411.57 = 34,165.67/x
3. Step 3: Cross multiply
   56,815.10x = 78,411.57 × 34,165.67
4. Step 4: Simplify right side
   56,815.10x = 2,678,983,824.80
5. Step 5: Solve for x
   x = 2,678,983,824.80/56,815.10
6. Step 6: Final answer
   x = 47,152.67