Finding the Fourth Proportional to 118,377.09, 163,364.31 and 64,667.10

Step by Step Solution

1. Step 1: Write the proportion equation
   118,377.09 : 163,364.31 = 64,667.10 : x
2. Step 2: Convert to fraction form
   118,377.09/163,364.31 = 64,667.10/x
3. Step 3: Cross multiply
   118,377.09x = 163,364.31 × 64,667.10
4. Step 4: Simplify right side
   118,377.09x = 10,564,296,171.20
5. Step 5: Solve for x
   x = 10,564,296,171.20/118,377.09
6. Step 6: Final answer
   x = 89,242.74