Finding the Fourth Proportional to 89,671, 123,779.82 and 70,500.76

Step by Step Solution

1. Step 1: Write the proportion equation
   89,671 : 123,779.82 = 70,500.76 : x
2. Step 2: Convert to fraction form
   89,671/123,779.82 = 70,500.76/x
3. Step 3: Cross multiply
   89,671x = 123,779.82 × 70,500.76
4. Step 4: Simplify right side
   89,671x = 8,726,571,382.66
5. Step 5: Solve for x
   x = 8,726,571,382.66/89,671
6. Step 6: Final answer
   x = 97,317.65