Finding the Fourth Proportional to 76,961, 106,223.86 and 45,140.15

Step by Step Solution

1. Step 1: Write the proportion equation
   76,961 : 106,223.86 = 45,140.15 : x
2. Step 2: Convert to fraction form
   76,961/106,223.86 = 45,140.15/x
3. Step 3: Cross multiply
   76,961x = 106,223.86 × 45,140.15
4. Step 4: Simplify right side
   76,961x = 4,794,960,973.98
5. Step 5: Solve for x
   x = 4,794,960,973.98/76,961
6. Step 6: Final answer
   x = 62,303.78