Finding the Fourth Proportional to 56,826.29, 78,429.51 and 34,188.15

Step by Step Solution

1. Step 1: Write the proportion equation
   56,826.29 : 78,429.51 = 34,188.15 : x
2. Step 2: Convert to fraction form
   56,826.29/78,429.51 = 34,188.15/x
3. Step 3: Cross multiply
   56,826.29x = 78,429.51 × 34,188.15
4. Step 4: Simplify right side
   56,826.29x = 2,681,359,852.31
5. Step 5: Solve for x
   x = 2,681,359,852.31/56,826.29
6. Step 6: Final answer
   x = 47,185.20