Finding the Fourth Proportional to 137,415, 189,632.72 and 77,799

Step by Step Solution

1. Step 1: Write the proportion equation
   137,415 : 189,632.72 = 77,799 : x
2. Step 2: Convert to fraction form
   137,415/189,632.72 = 77,799/x
3. Step 3: Cross multiply
   137,415x = 189,632.72 × 77,799
4. Step 4: Simplify right side
   137,415x = 14,753,235,983.28
5. Step 5: Solve for x
   x = 14,753,235,983.28/137,415
6. Step 6: Final answer
   x = 107,362.63