Finding the Fourth Proportional to 78,793.86, 118,190.71 and 28,877.87

Step by Step Solution

1. Step 1: Write the proportion equation
   78,793.86 : 118,190.71 = 28,877.87 : x
2. Step 2: Convert to fraction form
   78,793.86/118,190.71 = 28,877.87/x
3. Step 3: Cross multiply
   78,793.86x = 118,190.71 × 28,877.87
4. Step 4: Simplify right side
   78,793.86x = 3,413,095,625.34
5. Step 5: Solve for x
   x = 3,413,095,625.34/78,793.86
6. Step 6: Final answer
   x = 43,316.77