Finding the Fourth Proportional to 64,475.72, 89,051.70 and 51,599.72

Step by Step Solution

1. Step 1: Write the proportion equation
   64,475.72 : 89,051.70 = 51,599.72 : x
2. Step 2: Convert to fraction form
   64,475.72/89,051.70 = 51,599.72/x
3. Step 3: Cross multiply
   64,475.72x = 89,051.70 × 51,599.72
4. Step 4: Simplify right side
   64,475.72x = 4,595,042,785.52
5. Step 5: Solve for x
   x = 4,595,042,785.52/64,475.72
6. Step 6: Final answer
   x = 71,267.80