Finding the Fourth Proportional to 100,502.84, 138,696.17 and 55,181.59

Step by Step Solution

1. Step 1: Write the proportion equation
   100,502.84 : 138,696.17 = 55,181.59 : x
2. Step 2: Convert to fraction form
   100,502.84/138,696.17 = 55,181.59/x
3. Step 3: Cross multiply
   100,502.84x = 138,696.17 × 55,181.59
4. Step 4: Simplify right side
   100,502.84x = 7,653,474,564.86
5. Step 5: Solve for x
   x = 7,653,474,564.86/100,502.84
6. Step 6: Final answer
   x = 76,151.82