Finding the Fourth Proportional to 64,551.61, 89,111.55 and 43,077.09

Step by Step Solution

1. Step 1: Write the proportion equation
   64,551.61 : 89,111.55 = 43,077.09 : x
2. Step 2: Convert to fraction form
   64,551.61/89,111.55 = 43,077.09/x
3. Step 3: Cross multiply
   64,551.61x = 89,111.55 × 43,077.09
4. Step 4: Simplify right side
   64,551.61x = 3,838,666,259.39
5. Step 5: Solve for x
   x = 3,838,666,259.39/64,551.61
6. Step 6: Final answer
   x = 59,466.62