Finding the Fourth Proportional to 111,924,106.68, 154,455,587.28 and 64,890,320.76

Step by Step Solution

1. Step 1: Write the proportion equation
   111,924,106.68 : 154,455,587.28 = 64,890,320.76 : x
2. Step 2: Convert to fraction form
   111,924,106.68/154,455,587.28 = 64,890,320.76/x
3. Step 3: Cross multiply
   111,924,106.68x = 154,455,587.28 × 64,890,320.76
4. Step 4: Simplify right side
   111,924,106.68x = 10,022,672,601,773,376
5. Step 5: Solve for x
   x = 10,022,672,601,773,376/111,924,106.68
6. Step 6: Final answer
   x = 89,548,828.21