Finding the Fourth Proportional to 145,053.27, 217,666.17 and 78,492.06

Step by Step Solution

1. Step 1: Write the proportion equation
   145,053.27 : 217,666.17 = 78,492.06 : x
2. Step 2: Convert to fraction form
   145,053.27/217,666.17 = 78,492.06/x
3. Step 3: Cross multiply
   145,053.27x = 217,666.17 × 78,492.06
4. Step 4: Simplify right side
   145,053.27x = 17,085,066,075.61
5. Step 5: Solve for x
   x = 17,085,066,075.61/145,053.27
6. Step 6: Final answer
   x = 117,784.77