Finding the Fourth Proportional to 78,897.89, 108,878.53 and 43,087.91

Step by Step Solution

1. Step 1: Write the proportion equation
   78,897.89 : 108,878.53 = 43,087.91 : x
2. Step 2: Convert to fraction form
   78,897.89/108,878.53 = 43,087.91/x
3. Step 3: Cross multiply
   78,897.89x = 108,878.53 × 43,087.91
4. Step 4: Simplify right side
   78,897.89x = 4,691,347,541.74
5. Step 5: Solve for x
   x = 4,691,347,541.74/78,897.89
6. Step 6: Final answer
   x = 59,461.01