Finding the Fourth Proportional to 64,670.50, 89,239.32 and 59,909.83

Step by Step Solution

1. Step 1: Write the proportion equation
   64,670.50 : 89,239.32 = 59,909.83 : x
2. Step 2: Convert to fraction form
   64,670.50/89,239.32 = 59,909.83/x
3. Step 3: Cross multiply
   64,670.50x = 89,239.32 × 59,909.83
4. Step 4: Simplify right side
   64,670.50x = 5,346,312,267.42
5. Step 5: Solve for x
   x = 5,346,312,267.42/64,670.50
6. Step 6: Final answer
   x = 82,670.03