Finding the Fourth Proportional to 112,870.65, 155,729.98 and 88,923

Step by Step Solution

1. Step 1: Write the proportion equation
   112,870.65 : 155,729.98 = 88,923 : x
2. Step 2: Convert to fraction form
   112,870.65/155,729.98 = 88,923/x
3. Step 3: Cross multiply
   112,870.65x = 155,729.98 × 88,923
4. Step 4: Simplify right side
   112,870.65x = 13,847,977,011.54
5. Step 5: Solve for x
   x = 13,847,977,011.54/112,870.65
6. Step 6: Final answer
   x = 122,688.91