Finding the Fourth Proportional to 103,112,570.48, 142,670,053.28 and 89,909,260.34

Step by Step Solution

1. Step 1: Write the proportion equation
   103,112,570.48 : 142,670,053.28 = 89,909,260.34 : x
2. Step 2: Convert to fraction form
   103,112,570.48/142,670,053.28 = 89,909,260.34/x
3. Step 3: Cross multiply
   103,112,570.48x = 142,670,053.28 × 89,909,260.34
4. Step 4: Simplify right side
   103,112,570.48x = 12,827,358,962,584,612
5. Step 5: Solve for x
   x = 12,827,358,962,584,612/103,112,570.48
6. Step 6: Final answer
   x = 124,401,505.11