Finding the Fourth Proportional to 56,980.88, 85,490.34 and 35,896.56

Step by Step Solution

1. Step 1: Write the proportion equation
   56,980.88 : 85,490.34 = 35,896.56 : x
2. Step 2: Convert to fraction form
   56,980.88/85,490.34 = 35,896.56/x
3. Step 3: Cross multiply
   56,980.88x = 85,490.34 × 35,896.56
4. Step 4: Simplify right side
   56,980.88x = 3,068,809,119.23
5. Step 5: Solve for x
   x = 3,068,809,119.23/56,980.88
6. Step 6: Final answer
   x = 53,856.82