Finding the Fourth Proportional to 78,366.82, 117,573 and 28,446.12

Step by Step Solution

1. Step 1: Write the proportion equation
   78,366.82 : 117,573 = 28,446.12 : x
2. Step 2: Convert to fraction form
   78,366.82/117,573 = 28,446.12/x
3. Step 3: Cross multiply
   78,366.82x = 117,573 × 28,446.12
4. Step 4: Simplify right side
   78,366.82x = 3,344,495,666.76
5. Step 5: Solve for x
   x = 3,344,495,666.76/78,366.82
6. Step 6: Final answer
   x = 42,677.45