Finding the Fourth Proportional to 78,931.60, 118,359.02 and 26,323.31

Step by Step Solution

1. Step 1: Write the proportion equation
   78,931.60 : 118,359.02 = 26,323.31 : x
2. Step 2: Convert to fraction form
   78,931.60/118,359.02 = 26,323.31/x
3. Step 3: Cross multiply
   78,931.60x = 118,359.02 × 26,323.31
4. Step 4: Simplify right side
   78,931.60x = 3,115,601,536.46
5. Step 5: Solve for x
   x = 3,115,601,536.46/78,931.60
6. Step 6: Final answer
   x = 39,472.17