Finding the Fourth Proportional to 191,379.78, 287,111.18 and 58,256.58

Step by Step Solution

1. Step 1: Write the proportion equation
   191,379.78 : 287,111.18 = 58,256.58 : x
2. Step 2: Convert to fraction form
   191,379.78/287,111.18 = 58,256.58/x
3. Step 3: Cross multiply
   191,379.78x = 287,111.18 × 58,256.58
4. Step 4: Simplify right side
   191,379.78x = 16,726,116,648.87
5. Step 5: Solve for x
   x = 16,726,116,648.87/191,379.78
6. Step 6: Final answer
   x = 87,397.51