Finding the Fourth Proportional to 64,843.34, 88,770.63 and 64,405.94

Step by Step Solution

1. Step 1: Write the proportion equation
   64,843.34 : 88,770.63 = 64,405.94 : x
2. Step 2: Convert to fraction form
   64,843.34/88,770.63 = 64,405.94/x
3. Step 3: Cross multiply
   64,843.34x = 88,770.63 × 64,405.94
4. Step 4: Simplify right side
   64,843.34x = 5,717,355,667.21
5. Step 5: Solve for x
   x = 5,717,355,667.21/64,843.34
6. Step 6: Final answer
   x = 88,171.83