Finding the Fourth Proportional to 78,535.74, 117,733.83 and 28,606.53

Step by Step Solution

1. Step 1: Write the proportion equation
   78,535.74 : 117,733.83 = 28,606.53 : x
2. Step 2: Convert to fraction form
   78,535.74/117,733.83 = 28,606.53/x
3. Step 3: Cross multiply
   78,535.74x = 117,733.83 × 28,606.53
4. Step 4: Simplify right side
   78,535.74x = 3,367,956,339.91
5. Step 5: Solve for x
   x = 3,367,956,339.91/78,535.74
6. Step 6: Final answer
   x = 42,884.38