Finding the Fourth Proportional to 58,212.63, 87,320.88 and 45,550.71

Step by Step Solution

1. Step 1: Write the proportion equation
   58,212.63 : 87,320.88 = 45,550.71 : x
2. Step 2: Convert to fraction form
   58,212.63/87,320.88 = 45,550.71/x
3. Step 3: Cross multiply
   58,212.63x = 87,320.88 × 45,550.71
4. Step 4: Simplify right side
   58,212.63x = 3,977,528,081.82
5. Step 5: Solve for x
   x = 3,977,528,081.82/58,212.63
6. Step 6: Final answer
   x = 68,327.58