Finding the Fourth Proportional to 56,918,112.50, 78,547,020.61 and 30,812,629.49

Step by Step Solution

1. Step 1: Write the proportion equation
   56,918,112.50 : 78,547,020.61 = 30,812,629.49 : x
2. Step 2: Convert to fraction form
   56,918,112.50/78,547,020.61 = 30,812,629.49/x
3. Step 3: Cross multiply
   56,918,112.50x = 78,547,020.61 × 30,812,629.49
4. Step 4: Simplify right side
   56,918,112.50x = 2,420,240,243,599,323.50
5. Step 5: Solve for x
   x = 2,420,240,243,599,323.50/56,918,112.50
6. Step 6: Final answer
   x = 42,521,442.42