Finding the Fourth Proportional to 113,536.78, 156,685.57 and 63,235.78

Step by Step Solution

1. Step 1: Write the proportion equation
   113,536.78 : 156,685.57 = 63,235.78 : x
2. Step 2: Convert to fraction form
   113,536.78/156,685.57 = 63,235.78/x
3. Step 3: Cross multiply
   113,536.78x = 156,685.57 × 63,235.78
4. Step 4: Simplify right side
   113,536.78x = 9,908,134,233.69
5. Step 5: Solve for x
   x = 9,908,134,233.69/113,536.78
6. Step 6: Final answer
   x = 87,268.06