Finding the Fourth Proportional to 118,151.06, 163,052.42 and 64,439.01

Step by Step Solution

1. Step 1: Write the proportion equation
   118,151.06 : 163,052.42 = 64,439.01 : x
2. Step 2: Convert to fraction form
   118,151.06/163,052.42 = 64,439.01/x
3. Step 3: Cross multiply
   118,151.06x = 163,052.42 × 64,439.01
4. Step 4: Simplify right side
   118,151.06x = 10,506,936,200.71
5. Step 5: Solve for x
   x = 10,506,936,200.71/118,151.06
6. Step 6: Final answer
   x = 88,927.99