Finding the Fourth Proportional to 65,178.65, 89,900.06 and 59,818.36

Step by Step Solution

1. Step 1: Write the proportion equation
   65,178.65 : 89,900.06 = 59,818.36 : x
2. Step 2: Convert to fraction form
   65,178.65/89,900.06 = 59,818.36/x
3. Step 3: Cross multiply
   65,178.65x = 89,900.06 × 59,818.36
4. Step 4: Simplify right side
   65,178.65x = 5,377,674,077.90
5. Step 5: Solve for x
   x = 5,377,674,077.90/65,178.65
6. Step 6: Final answer
   x = 82,506.68