Finding the Fourth Proportional to 121,153.83, 181,808.51 and 58,790.31

Step by Step Solution

1. Step 1: Write the proportion equation
   121,153.83 : 181,808.51 = 58,790.31 : x
2. Step 2: Convert to fraction form
   121,153.83/181,808.51 = 58,790.31/x
3. Step 3: Cross multiply
   121,153.83x = 181,808.51 × 58,790.31
4. Step 4: Simplify right side
   121,153.83x = 10,688,578,369.59
5. Step 5: Solve for x
   x = 10,688,578,369.59/121,153.83
6. Step 6: Final answer
   x = 88,223.20