Finding the Fourth Proportional to 85,756.50, 128,611.52 and 35,826.15

Step by Step Solution

1. Step 1: Write the proportion equation
   85,756.50 : 128,611.52 = 35,826.15 : x
2. Step 2: Convert to fraction form
   85,756.50/128,611.52 = 35,826.15/x
3. Step 3: Cross multiply
   85,756.50x = 128,611.52 × 35,826.15
4. Step 4: Simplify right side
   85,756.50x = 4,607,655,428.12
5. Step 5: Solve for x
   x = 4,607,655,428.12/85,756.50
6. Step 6: Final answer
   x = 53,729.52