Finding the Fourth Proportional to 140,779.50, 194,275.71 and 77,117.55

Step by Step Solution

1. Step 1: Write the proportion equation
   140,779.50 : 194,275.71 = 77,117.55 : x
2. Step 2: Convert to fraction form
   140,779.50/194,275.71 = 77,117.55/x
3. Step 3: Cross multiply
   140,779.50x = 194,275.71 × 77,117.55
4. Step 4: Simplify right side
   140,779.50x = 14,982,066,779.71
5. Step 5: Solve for x
   x = 14,982,066,779.71/140,779.50
6. Step 6: Final answer
   x = 106,422.22