Finding the Fourth Proportional to 78,101.42, 117,127.86 and 28,175.00

Step by Step Solution

1. Step 1: Write the proportion equation
   78,101.42 : 117,127.86 = 28,175.00 : x
2. Step 2: Convert to fraction form
   78,101.42/117,127.86 = 28,175.00/x
3. Step 3: Cross multiply
   78,101.42x = 117,127.86 × 28,175.00
4. Step 4: Simplify right side
   78,101.42x = 3,300,076,764.20
5. Step 5: Solve for x
   x = 3,300,076,764.20/78,101.42
6. Step 6: Final answer
   x = 42,253.74