Finding the Fourth Proportional to 56,638.24, 78,164.84 and 33,978.24

Step by Step Solution

1. Step 1: Write the proportion equation
   56,638.24 : 78,164.84 = 33,978.24 : x
2. Step 2: Convert to fraction form
   56,638.24/78,164.84 = 33,978.24/x
3. Step 3: Cross multiply
   56,638.24x = 78,164.84 × 33,978.24
4. Step 4: Simplify right side
   56,638.24x = 2,655,903,693.08
5. Step 5: Solve for x
   x = 2,655,903,693.08/56,638.24
6. Step 6: Final answer
   x = 46,892.41