Finding the Fourth Proportional to 191,137.89, 286,741.40 and 78,755.59

Step by Step Solution

1. Step 1: Write the proportion equation
   191,137.89 : 286,741.40 = 78,755.59 : x
2. Step 2: Convert to fraction form
   191,137.89/286,741.40 = 78,755.59/x
3. Step 3: Cross multiply
   191,137.89x = 286,741.40 × 78,755.59
4. Step 4: Simplify right side
   191,137.89x = 22,582,487,023.79
5. Step 5: Solve for x
   x = 22,582,487,023.79/191,137.89
6. Step 6: Final answer
   x = 118,147.62