Finding the Fourth Proportional to 118,371.31, 163,349.73 and 64,656.50

Step by Step Solution

1. Step 1: Write the proportion equation
   118,371.31 : 163,349.73 = 64,656.50 : x
2. Step 2: Convert to fraction form
   118,371.31/163,349.73 = 64,656.50/x
3. Step 3: Cross multiply
   118,371.31x = 163,349.73 × 64,656.50
4. Step 4: Simplify right side
   118,371.31x = 10,561,621,001.00
5. Step 5: Solve for x
   x = 10,561,621,001.00/118,371.31
6. Step 6: Final answer
   x = 89,224.50