Finding the Fourth Proportional to 126,061, 173,972.78 and 77,023.61

Step by Step Solution

1. Step 1: Write the proportion equation
   126,061 : 173,972.78 = 77,023.61 : x
2. Step 2: Convert to fraction form
   126,061/173,972.78 = 77,023.61/x
3. Step 3: Cross multiply
   126,061x = 173,972.78 × 77,023.61
4. Step 4: Simplify right side
   126,061x = 13,400,011,557.34
5. Step 5: Solve for x
   x = 13,400,011,557.34/126,061
6. Step 6: Final answer
   x = 106,297.84