Finding the Fourth Proportional to 93,141.63, 128,290.59 and 71,590.17

Step by Step Solution

1. Step 1: Write the proportion equation
   93,141.63 : 128,290.59 = 71,590.17 : x
2. Step 2: Convert to fraction form
   93,141.63/128,290.59 = 71,590.17/x
3. Step 3: Cross multiply
   93,141.63x = 128,290.59 × 71,590.17
4. Step 4: Simplify right side
   93,141.63x = 9,184,345,147.50
5. Step 5: Solve for x
   x = 9,184,345,147.50/93,141.63
6. Step 6: Final answer
   x = 98,606.23