Finding the Fourth Proportional to 117,667.38, 176,576.13 and 42,780.34

Step by Step Solution

1. Step 1: Write the proportion equation
   117,667.38 : 176,576.13 = 42,780.34 : x
2. Step 2: Convert to fraction form
   117,667.38/176,576.13 = 42,780.34/x
3. Step 3: Cross multiply
   117,667.38x = 176,576.13 × 42,780.34
4. Step 4: Simplify right side
   117,667.38x = 7,553,986,435.84
5. Step 5: Solve for x
   x = 7,553,986,435.84/117,667.38
6. Step 6: Final answer
   x = 64,197.80