Finding the Fourth Proportional to 372,107,045.12, 558,117,978.06 and 99,499,069.76

Step by Step Solution

1. Step 1: Write the proportion equation
   372,107,045.12 : 558,117,978.06 = 99,499,069.76 : x
2. Step 2: Convert to fraction form
   372,107,045.12/558,117,978.06 = 99,499,069.76/x
3. Step 3: Cross multiply
   372,107,045.12x = 558,117,978.06 × 99,499,069.76
4. Step 4: Simplify right side
   372,107,045.12x = 55,532,219,633,302,088
5. Step 5: Solve for x
   x = 55,532,219,633,302,088/372,107,045.12
6. Step 6: Final answer
   x = 149,237,216.45