Finding the Fourth Proportional to 78,910.50, 108,899.73 and 45,376.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,910.50 : 108,899.73 = 45,376.50 : x
2. Step 2: Convert to fraction form
   78,910.50/108,899.73 = 45,376.50/x
3. Step 3: Cross multiply
   78,910.50x = 108,899.73 × 45,376.50
4. Step 4: Simplify right side
   78,910.50x = 4,941,488,598.35
5. Step 5: Solve for x
   x = 4,941,488,598.35/78,910.50
6. Step 6: Final answer
   x = 62,621.43