Finding the Fourth Proportional to 78,881.86, 118,323.06 and 19,717.57

Step by Step Solution

1. Step 1: Write the proportion equation
   78,881.86 : 118,323.06 = 19,717.57 : x
2. Step 2: Convert to fraction form
   78,881.86/118,323.06 = 19,717.57/x
3. Step 3: Cross multiply
   78,881.86x = 118,323.06 × 19,717.57
4. Step 4: Simplify right side
   78,881.86x = 2,333,043,218.16
5. Step 5: Solve for x
   x = 2,333,043,218.16/78,881.86
6. Step 6: Final answer
   x = 29,576.42