Finding the Fourth Proportional to 111,273.62, 166,858.59 and 64,539.86

Step by Step Solution

1. Step 1: Write the proportion equation
   111,273.62 : 166,858.59 = 64,539.86 : x
2. Step 2: Convert to fraction form
   111,273.62/166,858.59 = 64,539.86/x
3. Step 3: Cross multiply
   111,273.62x = 166,858.59 × 64,539.86
4. Step 4: Simplify right side
   111,273.62x = 10,769,030,038.40
5. Step 5: Solve for x
   x = 10,769,030,038.40/111,273.62
6. Step 6: Final answer
   x = 96,779.72