Finding the Fourth Proportional to 31,076,729.53, 42,894,157.70 and 18,357,581.91

Step by Step Solution

1. Step 1: Write the proportion equation
   31,076,729.53 : 42,894,157.70 = 18,357,581.91 : x
2. Step 2: Convert to fraction form
   31,076,729.53/42,894,157.70 = 18,357,581.91/x
3. Step 3: Cross multiply
   31,076,729.53x = 42,894,157.70 × 18,357,581.91
4. Step 4: Simplify right side
   31,076,729.53x = 787,433,013,644,954.25
5. Step 5: Solve for x
   x = 787,433,013,644,954.25/31,076,729.53
6. Step 6: Final answer
   x = 25,338,348.84