Finding the Fourth Proportional to 188,123.23, 259,536.15 and 107,507.50

Step by Step Solution

1. Step 1: Write the proportion equation
   188,123.23 : 259,536.15 = 107,507.50 : x
2. Step 2: Convert to fraction form
   188,123.23/259,536.15 = 107,507.50/x
3. Step 3: Cross multiply
   188,123.23x = 259,536.15 × 107,507.50
4. Step 4: Simplify right side
   188,123.23x = 27,902,082,108.59
5. Step 5: Solve for x
   x = 27,902,082,108.59/188,123.23
6. Step 6: Final answer
   x = 148,318.11