Finding the Fourth Proportional to 78,011.37, 107,655.57 and 42,201.27

Step by Step Solution

1. Step 1: Write the proportion equation
   78,011.37 : 107,655.57 = 42,201.27 : x
2. Step 2: Convert to fraction form
   78,011.37/107,655.57 = 42,201.27/x
3. Step 3: Cross multiply
   78,011.37x = 107,655.57 × 42,201.27
4. Step 4: Simplify right side
   78,011.37x = 4,543,201,776.57
5. Step 5: Solve for x
   x = 4,543,201,776.57/78,011.37
6. Step 6: Final answer
   x = 58,237.69