Finding the Fourth Proportional to 127,638.33, 191,575.72 and 64,502.88

Step by Step Solution

1. Step 1: Write the proportion equation
   127,638.33 : 191,575.72 = 64,502.88 : x
2. Step 2: Convert to fraction form
   127,638.33/191,575.72 = 64,502.88/x
3. Step 3: Cross multiply
   127,638.33x = 191,575.72 × 64,502.88
4. Step 4: Simplify right side
   127,638.33x = 12,357,185,516.82
5. Step 5: Solve for x
   x = 12,357,185,516.82/127,638.33
6. Step 6: Final answer
   x = 96,814.06