Finding the Fourth Proportional to 143,588.01, 215,382.05 and 64,609.98

Step by Step Solution

1. Step 1: Write the proportion equation
   143,588.01 : 215,382.05 = 64,609.98 : x
2. Step 2: Convert to fraction form
   143,588.01/215,382.05 = 64,609.98/x
3. Step 3: Cross multiply
   143,588.01x = 215,382.05 × 64,609.98
4. Step 4: Simplify right side
   143,588.01x = 13,915,829,942.86
5. Step 5: Solve for x
   x = 13,915,829,942.86/143,588.01
6. Step 6: Final answer
   x = 96,914.99