Finding the Fourth Proportional to 172,970,900.79, 238,959,112.82 and 113,573,118.03

Step by Step Solution

1. Step 1: Write the proportion equation
   172,970,900.79 : 238,959,112.82 = 113,573,118.03 : x
2. Step 2: Convert to fraction form
   172,970,900.79/238,959,112.82 = 113,573,118.03/x
3. Step 3: Cross multiply
   172,970,900.79x = 238,959,112.82 × 113,573,118.03
4. Step 4: Simplify right side
   172,970,900.79x = 27,139,331,524,082,080
5. Step 5: Solve for x
   x = 27,139,331,524,082,080/172,970,900.79
6. Step 6: Final answer
   x = 156,901,140.02