Finding the Fourth Proportional to 191,878.57, 287,818.58 and 58,758.31

Step by Step Solution

1. Step 1: Write the proportion equation
   191,878.57 : 287,818.58 = 58,758.31 : x
2. Step 2: Convert to fraction form
   191,878.57/287,818.58 = 58,758.31/x
3. Step 3: Cross multiply
   191,878.57x = 287,818.58 × 58,758.31
4. Step 4: Simplify right side
   191,878.57x = 16,911,733,347.40
5. Step 5: Solve for x
   x = 16,911,733,347.40/191,878.57
6. Step 6: Final answer
   x = 88,137.69