Finding the Fourth Proportional to 118,145.10, 163,038.24 and 64,430.22

Step by Step Solution

1. Step 1: Write the proportion equation
   118,145.10 : 163,038.24 = 64,430.22 : x
2. Step 2: Convert to fraction form
   118,145.10/163,038.24 = 64,430.22/x
3. Step 3: Cross multiply
   118,145.10x = 163,038.24 × 64,430.22
4. Step 4: Simplify right side
   118,145.10x = 10,504,589,671.61
5. Step 5: Solve for x
   x = 10,504,589,671.61/118,145.10
6. Step 6: Final answer
   x = 88,912.61