Finding the Fourth Proportional to 131,589,638.22, 181,593,034.61 and 72,049,852.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,589,638.22 : 181,593,034.61 = 72,049,852.50 : x
2. Step 2: Convert to fraction form
   131,589,638.22/181,593,034.61 = 72,049,852.50/x
3. Step 3: Cross multiply
   131,589,638.22x = 181,593,034.61 × 72,049,852.50
4. Step 4: Simplify right side
   131,589,638.22x = 13,083,751,358,677,896
5. Step 5: Solve for x
   x = 13,083,751,358,677,896/131,589,638.22
6. Step 6: Final answer
   x = 99,428,431.72