Finding the Fourth Proportional to 139,047.94, 191,885.00 and 78,630.45

Step by Step Solution

1. Step 1: Write the proportion equation
   139,047.94 : 191,885.00 = 78,630.45 : x
2. Step 2: Convert to fraction form
   139,047.94/191,885.00 = 78,630.45/x
3. Step 3: Cross multiply
   139,047.94x = 191,885.00 × 78,630.45
4. Step 4: Simplify right side
   139,047.94x = 15,088,003,227.83
5. Step 5: Solve for x
   x = 15,088,003,227.83/139,047.94
6. Step 6: Final answer
   x = 108,509.36