Finding the Fourth Proportional to 191,886.57, 287,830.58 and 58,766.31

Step by Step Solution

1. Step 1: Write the proportion equation
   191,886.57 : 287,830.58 = 58,766.31 : x
2. Step 2: Convert to fraction form
   191,886.57/287,830.58 = 58,766.31/x
3. Step 3: Cross multiply
   191,886.57x = 287,830.58 × 58,766.31
4. Step 4: Simplify right side
   191,886.57x = 16,914,740,797.93
5. Step 5: Solve for x
   x = 16,914,740,797.93/191,886.57
6. Step 6: Final answer
   x = 88,149.69