Finding the Fourth Proportional to 89,478.59, 133,925.82 and 65,779.86

Step by Step Solution

1. Step 1: Write the proportion equation
   89,478.59 : 133,925.82 = 65,779.86 : x
2. Step 2: Convert to fraction form
   89,478.59/133,925.82 = 65,779.86/x
3. Step 3: Cross multiply
   89,478.59x = 133,925.82 × 65,779.86
4. Step 4: Simplify right side
   89,478.59x = 8,809,621,936.66
5. Step 5: Solve for x
   x = 8,809,621,936.66/89,478.59
6. Step 6: Final answer
   x = 98,455.08