Finding the Fourth Proportional to 118,429.55, 163,430.80 and 64,713.33

Step by Step Solution

1. Step 1: Write the proportion equation
   118,429.55 : 163,430.80 = 64,713.33 : x
2. Step 2: Convert to fraction form
   118,429.55/163,430.80 = 64,713.33/x
3. Step 3: Cross multiply
   118,429.55x = 163,430.80 × 64,713.33
4. Step 4: Simplify right side
   118,429.55x = 10,576,150,722.20
5. Step 5: Solve for x
   x = 10,576,150,722.20/118,429.55
6. Step 6: Final answer
   x = 89,303.31