Finding the Fourth Proportional to 78,987.16, 108,984.72 and 45,453.16

Step by Step Solution

1. Step 1: Write the proportion equation
   78,987.16 : 108,984.72 = 45,453.16 : x
2. Step 2: Convert to fraction form
   78,987.16/108,984.72 = 45,453.16/x
3. Step 3: Cross multiply
   78,987.16x = 108,984.72 × 45,453.16
4. Step 4: Simplify right side
   78,987.16x = 4,953,699,915.72
5. Step 5: Solve for x
   x = 4,953,699,915.72/78,987.16
6. Step 6: Final answer
   x = 62,715.26