Finding the Fourth Proportional to 103,617, 142,991.46 and 58,913.64

Step by Step Solution

1. Step 1: Write the proportion equation
   103,617 : 142,991.46 = 58,913.64 : x
2. Step 2: Convert to fraction form
   103,617/142,991.46 = 58,913.64/x
3. Step 3: Cross multiply
   103,617x = 142,991.46 × 58,913.64
4. Step 4: Simplify right side
   103,617x = 8,424,147,397.51
5. Step 5: Solve for x
   x = 8,424,147,397.51/103,617
6. Step 6: Final answer
   x = 81,300.82