Finding the Fourth Proportional to 105,187,393.28, 145,155,818 and 58,778,028.56

Step by Step Solution

1. Step 1: Write the proportion equation
   105,187,393.28 : 145,155,818 = 58,778,028.56 : x
2. Step 2: Convert to fraction form
   105,187,393.28/145,155,818 = 58,778,028.56/x
3. Step 3: Cross multiply
   105,187,393.28x = 145,155,818 × 58,778,028.56
4. Step 4: Simplify right side
   105,187,393.28x = 8,531,972,816,054,162
5. Step 5: Solve for x
   x = 8,531,972,816,054,162/105,187,393.28
6. Step 6: Final answer
   x = 81,112,123.33