Finding the Fourth Proportional to 51,111.36, 77,014.56 and 42,538.08

Step by Step Solution

1. Step 1: Write the proportion equation
   51,111.36 : 77,014.56 = 42,538.08 : x
2. Step 2: Convert to fraction form
   51,111.36/77,014.56 = 42,538.08/x
3. Step 3: Cross multiply
   51,111.36x = 77,014.56 × 42,538.08
4. Step 4: Simplify right side
   51,111.36x = 3,276,051,514.44
5. Step 5: Solve for x
   x = 3,276,051,514.44/51,111.36
6. Step 6: Final answer
   x = 64,096.35