Finding the Fourth Proportional to 139,054.02, 191,896.02 and 81,695.74

Step by Step Solution

1. Step 1: Write the proportion equation
   139,054.02 : 191,896.02 = 81,695.74 : x
2. Step 2: Convert to fraction form
   139,054.02/191,896.02 = 81,695.74/x
3. Step 3: Cross multiply
   139,054.02x = 191,896.02 × 81,695.74
4. Step 4: Simplify right side
   139,054.02x = 15,677,087,356.95
5. Step 5: Solve for x
   x = 15,677,087,356.95/139,054.02
6. Step 6: Final answer
   x = 112,740.99