Finding the Fourth Proportional to 85,936.55, 128,773.01 and 35,989.34

Step by Step Solution

1. Step 1: Write the proportion equation
   85,936.55 : 128,773.01 = 35,989.34 : x
2. Step 2: Convert to fraction form
   85,936.55/128,773.01 = 35,989.34/x
3. Step 3: Cross multiply
   85,936.55x = 128,773.01 × 35,989.34
4. Step 4: Simplify right side
   85,936.55x = 4,634,455,085.82
5. Step 5: Solve for x
   x = 4,634,455,085.82/85,936.55
6. Step 6: Final answer
   x = 53,928.80