Finding the Fourth Proportional to 118,458.01, 163,467.61 and 64,742.59

Step by Step Solution

1. Step 1: Write the proportion equation
   118,458.01 : 163,467.61 = 64,742.59 : x
2. Step 2: Convert to fraction form
   118,458.01/163,467.61 = 64,742.59/x
3. Step 3: Cross multiply
   118,458.01x = 163,467.61 × 64,742.59
4. Step 4: Simplify right side
   118,458.01x = 10,583,316,452.51
5. Step 5: Solve for x
   x = 10,583,316,452.51/118,458.01
6. Step 6: Final answer
   x = 89,342.35