Finding the Fourth Proportional to 113,607.69, 156,779.24 and 65,889.33

Step by Step Solution

1. Step 1: Write the proportion equation
   113,607.69 : 156,779.24 = 65,889.33 : x
2. Step 2: Convert to fraction form
   113,607.69/156,779.24 = 65,889.33/x
3. Step 3: Cross multiply
   113,607.69x = 156,779.24 × 65,889.33
4. Step 4: Simplify right side
   113,607.69x = 10,330,079,081.51
5. Step 5: Solve for x
   x = 10,330,079,081.51/113,607.69
6. Step 6: Final answer
   x = 90,927.64