Finding the Fourth Proportional to 59,677.23, 89,871.17 and 51,978.99

Step by Step Solution

1. Step 1: Write the proportion equation
   59,677.23 : 89,871.17 = 51,978.99 : x
2. Step 2: Convert to fraction form
   59,677.23/89,871.17 = 51,978.99/x
3. Step 3: Cross multiply
   59,677.23x = 89,871.17 × 51,978.99
4. Step 4: Simplify right side
   59,677.23x = 4,671,412,776.67
5. Step 5: Solve for x
   x = 4,671,412,776.67/59,677.23
6. Step 6: Final answer
   x = 78,277.98