Finding the Fourth Proportional to 56,650.08, 78,178.01 and 31,157.58

Step by Step Solution

1. Step 1: Write the proportion equation
   56,650.08 : 78,178.01 = 31,157.58 : x
2. Step 2: Convert to fraction form
   56,650.08/78,178.01 = 31,157.58/x
3. Step 3: Cross multiply
   56,650.08x = 78,178.01 × 31,157.58
4. Step 4: Simplify right side
   56,650.08x = 2,435,837,600.82
5. Step 5: Solve for x
   x = 2,435,837,600.82/56,650.08
6. Step 6: Final answer
   x = 42,997.96