Finding the Fourth Proportional to 56,695.90, 78,238.67 and 30,853.61

Step by Step Solution

1. Step 1: Write the proportion equation
   56,695.90 : 78,238.67 = 30,853.61 : x
2. Step 2: Convert to fraction form
   56,695.90/78,238.67 = 30,853.61/x
3. Step 3: Cross multiply
   56,695.90x = 78,238.67 × 30,853.61
4. Step 4: Simplify right side
   56,695.90x = 2,413,945,411.10
5. Step 5: Solve for x
   x = 2,413,945,411.10/56,695.90
6. Step 6: Final answer
   x = 42,577.07