Finding the Fourth Proportional to 56,561.37, 78,051.24 and 31,062.78

Step by Step Solution

1. Step 1: Write the proportion equation
   56,561.37 : 78,051.24 = 31,062.78 : x
2. Step 2: Convert to fraction form
   56,561.37/78,051.24 = 31,062.78/x
3. Step 3: Cross multiply
   56,561.37x = 78,051.24 × 31,062.78
4. Step 4: Simplify right side
   56,561.37x = 2,424,488,496.85
5. Step 5: Solve for x
   x = 2,424,488,496.85/56,561.37
6. Step 6: Final answer
   x = 42,864.74