Finding the Fourth Proportional to 115,441.15, 172,848.93 and 59,920.51

Step by Step Solution

1. Step 1: Write the proportion equation
   115,441.15 : 172,848.93 = 59,920.51 : x
2. Step 2: Convert to fraction form
   115,441.15/172,848.93 = 59,920.51/x
3. Step 3: Cross multiply
   115,441.15x = 172,848.93 × 59,920.51
4. Step 4: Simplify right side
   115,441.15x = 10,357,196,038.55
5. Step 5: Solve for x
   x = 10,357,196,038.55/115,441.15
6. Step 6: Final answer
   x = 89,718.41