Finding the Fourth Proportional to 78,899.68, 118,308.72 and 28,966.96

Step by Step Solution

1. Step 1: Write the proportion equation
   78,899.68 : 118,308.72 = 28,966.96 : x
2. Step 2: Convert to fraction form
   78,899.68/118,308.72 = 28,966.96/x
3. Step 3: Cross multiply
   78,899.68x = 118,308.72 × 28,966.96
4. Step 4: Simplify right side
   78,899.68x = 3,427,043,959.89
5. Step 5: Solve for x
   x = 3,427,043,959.89/78,899.68
6. Step 6: Final answer
   x = 43,435.46