Finding the Fourth Proportional to 47,878,003.12, 66,073,274.76 and 28,315,660.72

Step by Step Solution

1. Step 1: Write the proportion equation
   47,878,003.12 : 66,073,274.76 = 28,315,660.72 : x
2. Step 2: Convert to fraction form
   47,878,003.12/66,073,274.76 = 28,315,660.72/x
3. Step 3: Cross multiply
   47,878,003.12x = 66,073,274.76 × 28,315,660.72
4. Step 4: Simplify right side
   47,878,003.12x = 1,870,908,430,763,499.25
5. Step 5: Solve for x
   x = 1,870,908,430,763,499.25/47,878,003.12
6. Step 6: Final answer
   x = 39,076,576.07