Finding the Fourth Proportional to 89,272,303.61, 133,704,581.45 and 42,618,607.25

Step by Step Solution

1. Step 1: Write the proportion equation
   89,272,303.61 : 133,704,581.45 = 42,618,607.25 : x
2. Step 2: Convert to fraction form
   89,272,303.61/133,704,581.45 = 42,618,607.25/x
3. Step 3: Cross multiply
   89,272,303.61x = 133,704,581.45 × 42,618,607.25
4. Step 4: Simplify right side
   89,272,303.61x = 5,698,303,043,461,569
5. Step 5: Solve for x
   x = 5,698,303,043,461,569/89,272,303.61
6. Step 6: Final answer
   x = 63,830,581.42