Finding the Fourth Proportional to 103,112,572.35, 142,670,055.87 and 89,909,262.21

Step by Step Solution

1. Step 1: Write the proportion equation
   103,112,572.35 : 142,670,055.87 = 89,909,262.21 : x
2. Step 2: Convert to fraction form
   103,112,572.35/142,670,055.87 = 89,909,262.21/x
3. Step 3: Cross multiply
   103,112,572.35x = 142,670,055.87 × 89,909,262.21
4. Step 4: Simplify right side
   103,112,572.35x = 12,827,359,462,731,180
5. Step 5: Solve for x
   x = 12,827,359,462,731,180/103,112,572.35
6. Step 6: Final answer
   x = 124,401,507.70