Finding the Fourth Proportional to 64,123.35, 96,189.86 and 19,141.15

Step by Step Solution

1. Step 1: Write the proportion equation
   64,123.35 : 96,189.86 = 19,141.15 : x
2. Step 2: Convert to fraction form
   64,123.35/96,189.86 = 19,141.15/x
3. Step 3: Cross multiply
   64,123.35x = 96,189.86 × 19,141.15
4. Step 4: Simplify right side
   64,123.35x = 1,841,184,587.20
5. Step 5: Solve for x
   x = 1,841,184,587.20/64,123.35
6. Step 6: Final answer
   x = 28,713.17