Finding the Fourth Proportional to 118,374.32, 163,353.87 and 64,659.50

Step by Step Solution

1. Step 1: Write the proportion equation
   118,374.32 : 163,353.87 = 64,659.50 : x
2. Step 2: Convert to fraction form
   118,374.32/163,353.87 = 64,659.50/x
3. Step 3: Cross multiply
   118,374.32x = 163,353.87 × 64,659.50
4. Step 4: Simplify right side
   118,374.32x = 10,562,378,740.50
5. Step 5: Solve for x
   x = 10,562,378,740.50/118,374.32
6. Step 6: Final answer
   x = 89,228.64