Finding the Fourth Proportional to 118,394.31, 163,384.72 and 64,680.22

Step by Step Solution

1. Step 1: Write the proportion equation
   118,394.31 : 163,384.72 = 64,680.22 : x
2. Step 2: Convert to fraction form
   118,394.31/163,384.72 = 64,680.22/x
3. Step 3: Cross multiply
   118,394.31x = 163,384.72 × 64,680.22
4. Step 4: Simplify right side
   118,394.31x = 10,567,759,634.24
5. Step 5: Solve for x
   x = 10,567,759,634.24/118,394.31
6. Step 6: Final answer
   x = 89,259.02