Finding the Fourth Proportional to 102,870.87, 141,990.33 and 59,858.65

Step by Step Solution

1. Step 1: Write the proportion equation
   102,870.87 : 141,990.33 = 59,858.65 : x
2. Step 2: Convert to fraction form
   102,870.87/141,990.33 = 59,858.65/x
3. Step 3: Cross multiply
   102,870.87x = 141,990.33 × 59,858.65
4. Step 4: Simplify right side
   102,870.87x = 8,499,349,466.85
5. Step 5: Solve for x
   x = 8,499,349,466.85/102,870.87
6. Step 6: Final answer
   x = 82,621.54