Finding the Fourth Proportional to 191,030.78, 286,606.17 and 78,763.83

Step by Step Solution

1. Step 1: Write the proportion equation
   191,030.78 : 286,606.17 = 78,763.83 : x
2. Step 2: Convert to fraction form
   191,030.78/286,606.17 = 78,763.83/x
3. Step 3: Cross multiply
   191,030.78x = 286,606.17 × 78,763.83
4. Step 4: Simplify right side
   191,030.78x = 22,574,199,650.83
5. Step 5: Solve for x
   x = 22,574,199,650.83/191,030.78
6. Step 6: Final answer
   x = 118,170.48