Finding the Fourth Proportional to 191,422.47, 287,111.82 and 51,192.03

Step by Step Solution

1. Step 1: Write the proportion equation
   191,422.47 : 287,111.82 = 51,192.03 : x
2. Step 2: Convert to fraction form
   191,422.47/287,111.82 = 51,192.03/x
3. Step 3: Cross multiply
   191,422.47x = 287,111.82 × 51,192.03
4. Step 4: Simplify right side
   191,422.47x = 14,697,836,902.79
5. Step 5: Solve for x
   x = 14,697,836,902.79/191,422.47
6. Step 6: Final answer
   x = 76,782.19