Finding the Fourth Proportional to 78,931.94, 118,402.00 and 39,475.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,931.94 : 118,402.00 = 39,475.72 : x
2. Step 2: Convert to fraction form
   78,931.94/118,402.00 = 39,475.72/x
3. Step 3: Cross multiply
   78,931.94x = 118,402.00 × 39,475.72
4. Step 4: Simplify right side
   78,931.94x = 4,674,004,470.80
5. Step 5: Solve for x
   x = 4,674,004,470.80/78,931.94
6. Step 6: Final answer
   x = 59,215.63