Finding the Fourth Proportional to 123,538.50, 185,377.82 and 56,978.67

Step by Step Solution

1. Step 1: Write the proportion equation
   123,538.50 : 185,377.82 = 56,978.67 : x
2. Step 2: Convert to fraction form
   123,538.50/185,377.82 = 56,978.67/x
3. Step 3: Cross multiply
   123,538.50x = 185,377.82 × 56,978.67
4. Step 4: Simplify right side
   123,538.50x = 10,562,582,041.37
5. Step 5: Solve for x
   x = 10,562,582,041.37/123,538.50
6. Step 6: Final answer
   x = 85,500.33