Finding the Fourth Proportional to 72,322,918.74, 99,806,436.66 and 42,560,146.80

Step by Step Solution

1. Step 1: Write the proportion equation
   72,322,918.74 : 99,806,436.66 = 42,560,146.80 : x
2. Step 2: Convert to fraction form
   72,322,918.74/99,806,436.66 = 42,560,146.80/x
3. Step 3: Cross multiply
   72,322,918.74x = 99,806,436.66 × 42,560,146.80
4. Step 4: Simplify right side
   72,322,918.74x = 4,247,776,595,834,501
5. Step 5: Solve for x
   x = 4,247,776,595,834,501/72,322,918.74
6. Step 6: Final answer
   x = 58,733,478.54