Finding the Fourth Proportional to 161,485,456.32, 242,143,061.76 and 70,502,757.12

Step by Step Solution

1. Step 1: Write the proportion equation
   161,485,456.32 : 242,143,061.76 = 70,502,757.12 : x
2. Step 2: Convert to fraction form
   161,485,456.32/242,143,061.76 = 70,502,757.12/x
3. Step 3: Cross multiply
   161,485,456.32x = 242,143,061.76 × 70,502,757.12
4. Step 4: Simplify right side
   161,485,456.32x = 17,071,753,471,558,440
5. Step 5: Solve for x
   x = 17,071,753,471,558,440/161,485,456.32
6. Step 6: Final answer
   x = 105,716,972.05