Finding the Fourth Proportional to 131,109,558.72, 180,930,171.24 and 72,372,242.58

Step by Step Solution

1. Step 1: Write the proportion equation
   131,109,558.72 : 180,930,171.24 = 72,372,242.58 : x
2. Step 2: Convert to fraction form
   131,109,558.72/180,930,171.24 = 72,372,242.58/x
3. Step 3: Cross multiply
   131,109,558.72x = 180,930,171.24 × 72,372,242.58
4. Step 4: Simplify right side
   131,109,558.72x = 13,094,322,243,022,220
5. Step 5: Solve for x
   x = 13,094,322,243,022,220/131,109,558.72
6. Step 6: Final answer
   x = 99,873,131.84