Finding the Fourth Proportional to 118,570.17, 163,624.55 and 64,855.02

Step by Step Solution

1. Step 1: Write the proportion equation
   118,570.17 : 163,624.55 = 64,855.02 : x
2. Step 2: Convert to fraction form
   118,570.17/163,624.55 = 64,855.02/x
3. Step 3: Cross multiply
   118,570.17x = 163,624.55 × 64,855.02
4. Step 4: Simplify right side
   118,570.17x = 10,611,873,138.47
5. Step 5: Solve for x
   x = 10,611,873,138.47/118,570.17
6. Step 6: Final answer
   x = 89,498.68