Finding the Fourth Proportional to 78,913.57, 118,417.52 and 28,998.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,913.57 : 118,417.52 = 28,998.72 : x
2. Step 2: Convert to fraction form
   78,913.57/118,417.52 = 28,998.72/x
3. Step 3: Cross multiply
   78,913.57x = 118,417.52 × 28,998.72
4. Step 4: Simplify right side
   78,913.57x = 3,433,956,505.57
5. Step 5: Solve for x
   x = 3,433,956,505.57/78,913.57
6. Step 6: Final answer
   x = 43,515.41