Finding the Fourth Proportional to 65,314.56, 89,547.03 and 64,133.58

Step by Step Solution

1. Step 1: Write the proportion equation
   65,314.56 : 89,547.03 = 64,133.58 : x
2. Step 2: Convert to fraction form
   65,314.56/89,547.03 = 64,133.58/x
3. Step 3: Cross multiply
   65,314.56x = 89,547.03 × 64,133.58
4. Step 4: Simplify right side
   65,314.56x = 5,742,971,612.27
5. Step 5: Solve for x
   x = 5,742,971,612.27/65,314.56
6. Step 6: Final answer
   x = 87,927.89