Finding the Fourth Proportional to 56,860.26, 78,487.83 and 42,497.34

Step by Step Solution

1. Step 1: Write the proportion equation
   56,860.26 : 78,487.83 = 42,497.34 : x
2. Step 2: Convert to fraction form
   56,860.26/78,487.83 = 42,497.34/x
3. Step 3: Cross multiply
   56,860.26x = 78,487.83 × 42,497.34
4. Step 4: Simplify right side
   56,860.26x = 3,335,523,997.37
5. Step 5: Solve for x
   x = 3,335,523,997.37/56,860.26
6. Step 6: Final answer
   x = 58,661.78