Finding the Fourth Proportional to 56,917,915.91, 78,546,707.39 and 30,812,414.39

Step by Step Solution

1. Step 1: Write the proportion equation
   56,917,915.91 : 78,546,707.39 = 30,812,414.39 : x
2. Step 2: Convert to fraction form
   56,917,915.91/78,546,707.39 = 30,812,414.39/x
3. Step 3: Cross multiply
   56,917,915.91x = 78,546,707.39 × 30,812,414.39
4. Step 4: Simplify right side
   56,917,915.91x = 2,420,213,696,916,693.50
5. Step 5: Solve for x
   x = 2,420,213,696,916,693.50/56,917,915.91
6. Step 6: Final answer
   x = 42,521,122.89