Finding the Fourth Proportional to 78,885.72, 108,864.84 and 43,077.60

Step by Step Solution

1. Step 1: Write the proportion equation
   78,885.72 : 108,864.84 = 43,077.60 : x
2. Step 2: Convert to fraction form
   78,885.72/108,864.84 = 43,077.60/x
3. Step 3: Cross multiply
   78,885.72x = 108,864.84 × 43,077.60
4. Step 4: Simplify right side
   78,885.72x = 4,689,636,031.58
5. Step 5: Solve for x
   x = 4,689,636,031.58/78,885.72
6. Step 6: Final answer
   x = 59,448.48