Finding the Fourth Proportional to 120,730.58, 181,130.43 and 58,436.18

Step by Step Solution

1. Step 1: Write the proportion equation
   120,730.58 : 181,130.43 = 58,436.18 : x
2. Step 2: Convert to fraction form
   120,730.58/181,130.43 = 58,436.18/x
3. Step 3: Cross multiply
   120,730.58x = 181,130.43 × 58,436.18
4. Step 4: Simplify right side
   120,730.58x = 10,584,570,410.96
5. Step 5: Solve for x
   x = 10,584,570,410.96/120,730.58
6. Step 6: Final answer
   x = 87,671.00