Finding the Fourth Proportional to 113,558.50, 156,709.47 and 64,499.77

Step by Step Solution

1. Step 1: Write the proportion equation
   113,558.50 : 156,709.47 = 64,499.77 : x
2. Step 2: Convert to fraction form
   113,558.50/156,709.47 = 64,499.77/x
3. Step 3: Cross multiply
   113,558.50x = 156,709.47 × 64,499.77
4. Step 4: Simplify right side
   113,558.50x = 10,107,724,610.57
5. Step 5: Solve for x
   x = 10,107,724,610.57/113,558.50
6. Step 6: Final answer
   x = 89,008.97