Finding the Fourth Proportional to 112,430.55, 155,154.57 and 61,443.31

Step by Step Solution

1. Step 1: Write the proportion equation
   112,430.55 : 155,154.57 = 61,443.31 : x
2. Step 2: Convert to fraction form
   112,430.55/155,154.57 = 61,443.31/x
3. Step 3: Cross multiply
   112,430.55x = 155,154.57 × 61,443.31
4. Step 4: Simplify right side
   112,430.55x = 9,533,210,342.43
5. Step 5: Solve for x
   x = 9,533,210,342.43/112,430.55
6. Step 6: Final answer
   x = 84,791.99