Finding the Fourth Proportional to 56,901.78, 78,541.11 and 33,039.18

Step by Step Solution

1. Step 1: Write the proportion equation
   56,901.78 : 78,541.11 = 33,039.18 : x
2. Step 2: Convert to fraction form
   56,901.78/78,541.11 = 33,039.18/x
3. Step 3: Cross multiply
   56,901.78x = 78,541.11 × 33,039.18
4. Step 4: Simplify right side
   56,901.78x = 2,594,933,870.69
5. Step 5: Solve for x
   x = 2,594,933,870.69/56,901.78
6. Step 6: Final answer
   x = 45,603.74