Finding the Fourth Proportional to 91,870.14, 137,564.58 and 60,180.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91,870.14 : 137,564.58 = 60,180.50 : x
2. Step 2: Convert to fraction form
   91,870.14/137,564.58 = 60,180.50/x
3. Step 3: Cross multiply
   91,870.14x = 137,564.58 × 60,180.50
4. Step 4: Simplify right side
   91,870.14x = 8,278,705,206.69
5. Step 5: Solve for x
   x = 8,278,705,206.69/91,870.14
6. Step 6: Final answer
   x = 90,113.12