Finding the Fourth Proportional to 64,764.52, 89,051.94 and 55,316.20

Step by Step Solution

1. Step 1: Write the proportion equation
   64,764.52 : 89,051.94 = 55,316.20 : x
2. Step 2: Convert to fraction form
   64,764.52/89,051.94 = 55,316.20/x
3. Step 3: Cross multiply
   64,764.52x = 89,051.94 × 55,316.20
4. Step 4: Simplify right side
   64,764.52x = 4,926,014,923.43
5. Step 5: Solve for x
   x = 4,926,014,923.43/64,764.52
6. Step 6: Final answer
   x = 76,060.39