Finding the Fourth Proportional to 298,839,700.80, 448,272,978.84 and 91,562,925.60

Step by Step Solution

1. Step 1: Write the proportion equation
   298,839,700.80 : 448,272,978.84 = 91,562,925.60 : x
2. Step 2: Convert to fraction form
   298,839,700.80/448,272,978.84 = 91,562,925.60/x
3. Step 3: Cross multiply
   298,839,700.80x = 448,272,978.84 × 91,562,925.60
4. Step 4: Simplify right side
   298,839,700.80x = 41,045,185,410,017,288
5. Step 5: Solve for x
   x = 41,045,185,410,017,288/298,839,700.80
6. Step 6: Final answer
   x = 137,348,502.56