Finding the Fourth Proportional to 82,430.78, 123,453.86 and 60,188.99

Step by Step Solution

1. Step 1: Write the proportion equation
   82,430.78 : 123,453.86 = 60,188.99 : x
2. Step 2: Convert to fraction form
   82,430.78/123,453.86 = 60,188.99/x
3. Step 3: Cross multiply
   82,430.78x = 123,453.86 × 60,188.99
4. Step 4: Simplify right side
   82,430.78x = 7,430,562,226.79
5. Step 5: Solve for x
   x = 7,430,562,226.79/82,430.78
6. Step 6: Final answer
   x = 90,143.06