Finding the Fourth Proportional to 143,587.01, 215,380.55 and 64,608.98

Step by Step Solution

1. Step 1: Write the proportion equation
   143,587.01 : 215,380.55 = 64,608.98 : x
2. Step 2: Convert to fraction form
   143,587.01/215,380.55 = 64,608.98/x
3. Step 3: Cross multiply
   143,587.01x = 215,380.55 × 64,608.98
4. Step 4: Simplify right side
   143,587.01x = 13,915,516,731.96
5. Step 5: Solve for x
   x = 13,915,516,731.96/143,587.01
6. Step 6: Final answer
   x = 96,913.48