Finding the Fourth Proportional to 42,764.58, 64,146.72 and 11,599.86

Step by Step Solution

1. Step 1: Write the proportion equation
   42,764.58 : 64,146.72 = 11,599.86 : x
2. Step 2: Convert to fraction form
   42,764.58/64,146.72 = 11,599.86/x
3. Step 3: Cross multiply
   42,764.58x = 64,146.72 × 11,599.86
4. Step 4: Simplify right side
   42,764.58x = 744,092,971.46
5. Step 5: Solve for x
   x = 744,092,971.46/42,764.58
6. Step 6: Final answer
   x = 17,399.75