Finding the Fourth Proportional to 56,650.74, 78,174.81 and 31,499.70

Step by Step Solution

1. Step 1: Write the proportion equation
   56,650.74 : 78,174.81 = 31,499.70 : x
2. Step 2: Convert to fraction form
   56,650.74/78,174.81 = 31,499.70/x
3. Step 3: Cross multiply
   56,650.74x = 78,174.81 × 31,499.70
4. Step 4: Simplify right side
   56,650.74x = 2,462,483,062.56
5. Step 5: Solve for x
   x = 2,462,483,062.56/56,650.74
6. Step 6: Final answer
   x = 43,467.80