Finding the Fourth Proportional to 43,547.21, 64,959.17 and 42,089.48

Step by Step Solution

1. Step 1: Write the proportion equation
   43,547.21 : 64,959.17 = 42,089.48 : x
2. Step 2: Convert to fraction form
   43,547.21/64,959.17 = 42,089.48/x
3. Step 3: Cross multiply
   43,547.21x = 64,959.17 × 42,089.48
4. Step 4: Simplify right side
   43,547.21x = 2,734,097,686.53
5. Step 5: Solve for x
   x = 2,734,097,686.53/43,547.21
6. Step 6: Final answer
   x = 62,784.68