Finding the Fourth Proportional to 137,410.58, 189,632.04 and 76,981.72

Step by Step Solution

1. Step 1: Write the proportion equation
   137,410.58 : 189,632.04 = 76,981.72 : x
2. Step 2: Convert to fraction form
   137,410.58/189,632.04 = 76,981.72/x
3. Step 3: Cross multiply
   137,410.58x = 189,632.04 × 76,981.72
4. Step 4: Simplify right side
   137,410.58x = 14,598,199,665.77
5. Step 5: Solve for x
   x = 14,598,199,665.77/137,410.58
6. Step 6: Final answer
   x = 106,237.82