Finding the Fourth Proportional to 118,535.86, 163,570.96 and 64,809.51

Step by Step Solution

1. Step 1: Write the proportion equation
   118,535.86 : 163,570.96 = 64,809.51 : x
2. Step 2: Convert to fraction form
   118,535.86/163,570.96 = 64,809.51/x
3. Step 3: Cross multiply
   118,535.86x = 163,570.96 × 64,809.51
4. Step 4: Simplify right side
   118,535.86x = 10,600,953,767.83
5. Step 5: Solve for x
   x = 10,600,953,767.83/118,535.86
6. Step 6: Final answer
   x = 89,432.46