Finding the Fourth Proportional to 72,509,910.95, 99,873,063.30 and 55,732,567.01

Step by Step Solution

1. Step 1: Write the proportion equation
   72,509,910.95 : 99,873,063.30 = 55,732,567.01 : x
2. Step 2: Convert to fraction form
   72,509,910.95/99,873,063.30 = 55,732,567.01/x
3. Step 3: Cross multiply
   72,509,910.95x = 99,873,063.30 × 55,732,567.01
4. Step 4: Simplify right side
   72,509,910.95x = 5,566,182,192,538,567
5. Step 5: Solve for x
   x = 5,566,182,192,538,567/72,509,910.95
6. Step 6: Final answer
   x = 76,764,432.88