Finding the Fourth Proportional to 58,868.78, 88,302.76 and 19,429.07

Step by Step Solution

1. Step 1: Write the proportion equation
   58,868.78 : 88,302.76 = 19,429.07 : x
2. Step 2: Convert to fraction form
   58,868.78/88,302.76 = 19,429.07/x
3. Step 3: Cross multiply
   58,868.78x = 88,302.76 × 19,429.07
4. Step 4: Simplify right side
   58,868.78x = 1,715,640,015.15
5. Step 5: Solve for x
   x = 1,715,640,015.15/58,868.78
6. Step 6: Final answer
   x = 29,143.46