Finding the Fourth Proportional to 56,805.10, 78,404.38 and 35,311.06

Step by Step Solution

1. Step 1: Write the proportion equation
   56,805.10 : 78,404.38 = 35,311.06 : x
2. Step 2: Convert to fraction form
   56,805.10/78,404.38 = 35,311.06/x
3. Step 3: Cross multiply
   56,805.10x = 78,404.38 × 35,311.06
4. Step 4: Simplify right side
   56,805.10x = 2,768,541,374.42
5. Step 5: Solve for x
   x = 2,768,541,374.42/56,805.10
6. Step 6: Final answer
   x = 48,737.55