Finding the Fourth Proportional to 101,208,978.18, 139,668,455.79 and 54,799,263.54

Step by Step Solution

1. Step 1: Write the proportion equation
   101,208,978.18 : 139,668,455.79 = 54,799,263.54 : x
2. Step 2: Convert to fraction form
   101,208,978.18/139,668,455.79 = 54,799,263.54/x
3. Step 3: Cross multiply
   101,208,978.18x = 139,668,455.79 × 54,799,263.54
4. Step 4: Simplify right side
   101,208,978.18x = 7,653,728,517,061,048
5. Step 5: Solve for x
   x = 7,653,728,517,061,048/101,208,978.18
6. Step 6: Final answer
   x = 75,623,019.37